Grizzly Claws

[Mark_Solesbury]

Got some new (to me) tyres on white 8 spokes on my 90 now, in 265 75 16.

They look real mean, and will no doubt be good in the brown stuff.

one thing - christ they are noisy. It really does sound like a B17.

I dont think i can put up with them all the while.... Might have to keep the wheels and swap them for something a little less aggressive  :?

[Jake]

Not all aggresive tyres  are noisey
Grizzleys are very noisey though
Good in the mud, not the best on the road
I'm sure some of the ex Grizzley users will be along to slate them soon
 :lol:

[TDi90]

THEY ARE CRAP. never ever ever again.  buy bfg mt all day long!! never touching grizzlies ever again.

R

[Mark_Solesbury]

on what grounds are they crap?

Just curious thats all.

they are not new, and were cheap and will probably be replaced with something else after this winter, but they will do for now.

Cant afford BFG at the moment :(

[L90OOK]

THEY ARE CRAP. never ever ever again.  buy bfg mt all day long!! never touching grizzlies ever again.

R

So you don't like them then Rob  :lol:

[V8MoneyPit]

on what grounds are they crap?

Just curious thats all.

they are not new, and were cheap and will probably be replaced with something else after this winter, but they will do for now.

Cant afford BFG at the moment :(

Do a bit of Forum searching...... there are a few not so endearing threads about them  :D

[anaxemurderer]

Grizzlies are by no means crap. They are a very popular aggressive retread. You have to bear in mind that these forums tend to present the more extreme views!

Grizzlies WILL dig you out of more mud than bfg muds and on most offroad terrain will give you the advantage.

Not sure which aggressive tyres don't make lots of noise?

Nick

[V8MoneyPit]

Of course, forums tend to bias towards bad news. However, there has been quite a lot of it! I'm sure there are plenty of satisfied users, but from the way i see it, there are far too many bad reports. It certainly swayed my choice to Greenway Machos when I wanted a more aggresive tread pattern. They were relatively quiet on the road too.

[anaxemurderer]

Thats a fair point about the grizzlies.

Macho's are still only an mt tyre though, a very good one but not really an aggressive.

Nick

[extreme90]

i used to run grizzlys, there crap in real sticky mud, and ive had a 90 get further than me with bf muds on, they cleaned way better.....want proof.....ask jarrod of here aka edge aka used to be trug    
but are good in woodland ect ect
oh, there usless on rocky stuff aswel

loud on road ? so what  :roll:
its a land rover, not a L200
my simex are 10x's as bad as the grizzlys were but it doesnt bother me, you get accustom to the noise to the extent you dont notice it  :roll:

i aint bias what so ever, there good for the price i suppose, but even so, they like so shed blocks every so often  :roll:
dan

[anaxemurderer]

thats fair enough i suppose, my experience of them has been different. Guess its a bit dependant on specific site! They are rubbish on rock though

[extreme90]

bf muds outperform grizzlys on rock, then again, they beat simex's aswel on rock  :lol:  :lol:
only thing that claws simex back on mine is cos of the lockers which help them out abit  :oops:
dan

[Tommo]

I LOVE MY GRIZZLEY CLAWS!

You know a tyre is good when 80% of the triallers use them.

They get me further than any other tyre i have used. and i find them fine on the road. if you think that grizzleys are noisey then for gods sake dont try general super all grips, a cross ply mud terrain.

Ive never really had an issue with tyre noise though, its just one of them slightly more pleasent noises that covers up some unpleasent ones.

i regularly go no the motorway and my tyres do not bother me.

[extreme90]

I LOVE MY GRIZZLEY CLAWS!

You know a tyre is good when 80% of the triallers use them.

They get me further than any other tyre i have used. and i find them fine on the road. if you think that grizzleys are noisey then for gods sake dont try general super all grips, a cross ply mud terrain.

Ive never really had an issue with tyre noise though, its just one of them slightly more pleasent noises that covers up some unpleasent ones.

i regularly go no the motorway and my tyres do not bother me.

thank you !!!
why does everybody cry about the noise of tyres ??
my simex are louder than grizzys doing 70 at 30 mph  :shock:
and yet it isnt a issue
people know exactly who is coming up the road 5 minutes before i even land  :lol:
its just ace  :twisted:

[anaxemurderer]

worse tyres i've ever driven for noise were deestone extra tractions. They're not even that aggressive but they sound like a whole flight of b52 bombers going down the road! Was brilliant!

Trialers seems to be moving onto simex-alike treads now. But it did used to be grizzlies. A few people tried anaconda's but they didn't last long.

Gone are the days when diamond backs looked hardcore! (i'm only 24, i sound like i'm 60!)

I'd quite like a set of SATs though

Nick

[biggerlandy]

i agree i had a set of deestones once sounded fab but they was crazy in wet it was like driving on ice with them  :D

[biggerlandy]

think im gonna get of grizzlys next from what ive seen of them in mud etc they pull all day long  :)

[Defender]

I used to use SAG's, but they were getting harder to come by so when I needed new tyres, I decided to opt for Grizzlys.
NEVER AGAIN! The Grizzleys were more expensive, wore out at an alarming rate (much faster than SAG's), The tread blocks started to part company from the main body of the tyre, the sidewalls developed some strange bulges, they howl on the road more than SAG's & they certainly gave me a few 'brown trouser moments' on wet tarmac.
I'm going back to SAG's. Great grip off-tarmac, never let go on me on-tarmac, good tough sidewalls & lasted me ages including a trip across France & around the Alps.

[Tommo]

I used to use SAG's, but they were getting harder to come by so when I needed new tyres, I decided to opt for Grizzlys.
NEVER AGAIN! The Grizzleys were more expensive, wore out at an alarming rate (much faster than SAG's), The tread blocks started to part company from the main body of the tyre, the sidewalls developed some strange bulges, they howl on the road more than SAG's & they certainly gave me a few 'brown trouser moments' on wet tarmac.
I'm going back to SAG's. Great grip off-tarmac, never let go on me on-tarmac, good tough sidewalls & lasted me ages including a trip across France & around the Alps.

Weird, i found exactly the opposite! seriously. I found running SAG's at above average pressure sorted them out on road a bit though. still worse than my claws.

[stuvy]

its part of driving a 4x4 having the roar of the tyres, the whistle of a turbo, or a howling V8, just like dan said its not an L200!!

i do think simex's are next when i come to replace mine though

[Defender]

I do know people who run Grizzlys, but bought them a few years back & didn't have any problems. In fact they are still using them.
I've got a feeling that the more recent ones were somewhat sub-standard & I must have some of those. :roll:

[anaxemurderer]

Thats a bit contrary to what i have heard. Other than people on the internet (which i partly discredit for reasons i've said earlier), people who have bought grizzlies in last 5 years or so have nothing but praise for them. It seemed to be the older tyres that had problems
with egging and delaminating

I suspect there might be good and bad batches

Another issue is that i know several people have had poor service from bronco, but thats an aside.

The point is though that you can't deny they are a very good offroad tyre, if you have them, then use and enjoy!

Nick

[ScrapyJape]

I have had my grizzlies on for 2 years now. and they are only about half way on the fronts down backs are still full (need to switch them around).

I love the sound of them, i dont think they are as loud as most, i had Trackers on my jimny and they were louder than these

carnt say i ever had any problems with them. but i would have Insta turbos for my next ones..

[Defender]

Must of had some of a bad batch then. :roll:

[hingmy]

Expect noise from an m/t but they wear badly, they don't self clean particularly well and bits fall off them. Need i say more?

[Defender]

This is what my Grizzlys now look like:
Tread blocks lifting away

Perished rubber:

And odd bulges (look at the banding around the lettering):

I can't use these on the road now. If I get pulled by the boys in blue, I think they would take a dim view of the condition of these tyres.

[ragerover]

grizzly claws ran them for a few years great off road then bang exploded off the rim doing 70 only hitting an artic stopped the landy from rolling

heres a picture of the tyre

and a link which proves there illegal on road
 http://forums.mud-club.com/viewtopic.php?t=28422 i rang bronco and they tried to mug me off by saying as they were older than 12 months tough luck
i missed billing this year but itll be tough luck when we meet up at next years show

i wouldnt have a set now for free

[Jas278]

 
My favourite subject...................have a butchers...here




Report on 4 Tyres:
branded
‘BRONCO’ Grizzly Claw
 belonging to Mr *****************
 
Ref:










Report prepared for
****************
Leicester Trading Standards












Report prepared by
S.A.**********– HND, ONC.






INTRODUCTION

I am currently employed by ‘Starco’ Europe, which is part of the ‘Scandinavian Tyre and Rim Company’, as Technical Director.  In addition to my responsibility for technical matters in the UK, my role extends to technical support for all 13 plants around Europe and Russia. The Company manufactures wheels, tyres and wheel assemblies for supply as Original Equipment to vehicle manufacturers.  Previously, Goodyear had employed me for fifteen years until May 2000.  My final position as Technical Training Manager, gave me responsibility for all Technical Training of company personnel operating throughout the UK, Europe and the Middle East. Prior to this position I was Manager of Product Performance and Service department for six years until 31st December 1994.  In this role I had occasion to examine many thousands of tyres having failed either in service, or as a result of systematic destructive testing.

I began my career with British Leyland as an apprentice and gained extensive experience in all aspects of automotive engineering in both design and practical skills. I hold an HND qualification in Mechanical Engineering and an ONC in Electronics.  Following my apprenticeship I worked for 11 years in research and development, specifically dealing with axles, brakes and suspension systems as part of a vehicle design team.  I specialise in all aspects of vehicle design and behaviour, and in particular, tyres, their performance, and the interaction between tyres and vehicle suspension design.

I have been asked to examine the subject tyre(s) with the purpose of identifying the reasons for their current condition, the nature of any structural failure and any possible implications to the merchantable and safe condition for sale.  I was given the information that the wheels and tyres were fitted to a ‘Landrover Discovery’ 4 x 4 vehicle and had only travelled for a relatively short distance since they were supplied.

THE TYRE(S)

I examined 4off wheel and tyre assemblies at a private address in********, at the request of Mr ***********of Leicester Trading Standards, the details of which were as follows:

Tyre size: LT 265/75R16   
Service description: 112Q
Brand: ‘Bronco’ Grizzly Claw
TDR: 14mm centre-line – 17mm at shoulder
Production date / Serial No: No markings

Other markings:   Retread made in England – conforms to BSAU 144


EXAMINATION

Following a careful examination of the wheels and tyres, the following details were noted:

Wheel Assembly No. 1

 The first of four tyres was examined having been fitted to the front of the vehicle, to reveal a structural failure in the shoulder area of the tyre such that complete and catastrophic deflation had occurred.

There was clear evidence of rubber degradation and cracking due to overheating and rubber reversion at the base of the large shoulder blocks and also at the junction between these blocks and the carcass where there are naturally uneven stresses due to the heavy lug design. 
The carcass showed clear signs of distress at these same points and had suffered separation between radial cords and also belt edge, resulting in structural failure.  The carcass had suffered from severe abrasion and overheating in the shoulder areas as was evidenced by the inner liner condition.  I was unable to detect any evidence of a penetration which might have caused the deflation.  The deflation appears to have been caused by the break-up of the tyre structure, the evidence of overheating being such that it had occurred over a relatively short distance including the time taken for the driver to pull over and stop when it was realised that the tyre had failed.

Wheel Assembly No. 2

The second tyre, also having been fitted to the front of the vehicle, was also showing similar signs of rubber reversion in the shoulder blocks with some cracks beginning to appear.  However, this tyre remained intact insofar as it was still inflated and no major structural failure was immediately apparent.

Wheel Assembly No’s 3 & 4

These two tyres remained in apparently sound and inflated condition.

Balance Weights

The following quantities of balance weights were seen to be fitted to the wheel assemblies, having been balanced by the tyre shop who supplied the new wheels and tyres;

Wheel assembly #1 – 225 grams
Wheel assembly #2 – 200 grams
Wheel assembly #3 – 190 grams
Wheel assembly #4 – 100 grams


TERMS OF REFERENCE

There are standards laid down within European Directives ECE108 / ECE109 regarding the manufacture and testing of such remoulded tyres.

These performance requirements are specifically to ensure that process quality is consistent to the original development of the remoulded product, and that any such product is capable of being operated within the performance suggested by its service description.

The markings ‘conforms to BSAU 144’ are out-dated and obsolete for two reasons (i) They are now superseded by ECE 108 / 109, & (ii) In any event, there were several suffix additions and revisions to BSAU 144 even when it was current, no such suffix is marked on these tyres, this means that these markings were insufficient even when last BSAU 144 was current.

The remoulding processor is totally responsible for ensuring that the carcasses gleaned from tyres having previously worn-out treads, are in suitable condition for both the re-moulding process and the subsequent safe operation with the new re-moulded tread. A further requirement is dynamometer testing (sometimes referred to as ‘drum’ testing) for the required duration to prove that the tyre tread design, rubber compounds used and re-manufacturing process are all of such integrity that they are safe for continuous operational use up to the full load and speeds indicated by that service description.

The above mentioned dynamometer tests are required to be repeated during production runs to ensure that each subsequent batch also complies with the same requirements.
 
CONCLUSIONS

The tyres fitted to the front axle of the vehicle whilst it was lightly loaded (as was the case according to Mr******), would be subjected to a higher load than those on the rear axle due to the un-laden weight distribution of the vehicle, additionally, the steering forces would also load the shoulder areas of the tyres more than those at the rear.  This is therefore a fair indication that the loads at the front axle, although being far below what the tyres are able to carry according to their service description, creates the differing results.  Both front tyres were showing signs of distress, with one of them having failed completely, both rear tyres being in better condition than the front ones. 

The two front tyres showed clear evidence of overheating and rubber reversion in the shoulder areas and as the tyres were not carrying their maximum load, this tends to indicate a small safety margin with regard to heat generation and satisfactory running temperature. 

Mr *******informed me that he had operated these tyres in the same way as on previous sets of tyres and at the same correct recommended pressures for the vehicle, and I am unable to detect any collaborative evidence for under-inflation prior to the complete deflation of the tyre due to the carcass break-up. 

The quantity of balance weights fitted would give concern regarding the uniformity of the re-moulded tyres; generally, re-moulded tyres have very good uniformity as the action of buffing off the worn-out tread tends to reduce any run-out within the original carcass.  It is interesting also to note that the worst offender in this regard, was in fact the same tyre on the front of the vehicle which had failed.

It would be a matter for further investigation as to whether the remoulding manufacturer has in fact dynamometer tested the original remould design and/or the subsequent production batches, to prove the ability of the tyres to be operated safely at the rated load and speed in accordance with ECE 108 / 109. 

These tyres do not carry the required markings to indicate that they comply with the required testing procedures for the above mentioned standards.

It is therefore my considered opinion that these tyres do not comply with the necessary regulations, governing the sale of such tyres for use on the public highway.   








********************– December 2005.

[ukmudmaster]

I ran a set of Colway Mt's and had a similar set of issues. They were superb in mud , a bit noisy on the road, and wore quickly.
However, they were cheap, ( being remoulds) and looked good on a set of modular wheels.
I now have a set of Goodyear G90's, noisy on the road and unstoppable in mud, and would not use remoulds again.
It ll comes down to cash, and personal choice!
Dave

[Tommo]

In that vid it looks like somthing is lifting your wheels off the floor, probs your diffs. nothing to do with your tyres (apart from a too small dia). you could have simex on it doesnt matter if they aint on the ground ;)