AuthorTopic: 7's and 8's  (Read 1003 times)

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Offline lee celtic

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7's and 8's
« on: July 01, 2007, 16:28:15 »
Hi All

rim sizes  :?

I've read alot about tyres but don't know a lot about rims.

I am hoping to fit new tyres to the disco and am thinking of 265's would these go on standard  7" rims or would they be better on 8's and do 8's have a better offset stopping them hitting the arms like the 235's do now...
so many hills , so little time ....
discovery TD5
work in progress...lol

Offline Disco-Ron

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7's and 8's
« Reply #1 on: July 01, 2007, 21:47:50 »
I have 285's on 7's, they're a bit wide really, but i suspect that 265's would be ideal on 7's.....
gone from 200tdi.... to 300tdi... still with loads done to it, in fact, even more than the last truck...LOL!!!

Offline clbarclay

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7's and 8's
« Reply #2 on: July 01, 2007, 21:48:01 »
Offset can varry a lot, its not necciserilly proportional to rim width.

265 wide tyres fit quite happily on a 7 inch rim, but it is the minimum, any narrower and problems will arise.

Most aftermarket steel rims (modulars and 8 spokes) tend to have less off set (measured from center of rim to hub surface) or evan negative offset compared to land rover rims, which makes them stick out further and helps clearence on radius arms if using larger tyres. alternatively reduced off set wheels are used by trialers with standard size tyres to make the turn tighter.

There are 2 set screws (bolts with thread along the whole length), one on each side on the hub next to the chrome swival. By slakening of the locking nut these can be wound out to reduce the steering lock and prevent tyres from catching.
Chris

Various range rovers from 1986 to 1988 in various states
Locost sports car based on mk2 escort - currently working on brakes, fuel and wiring

Offline clbarclay

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« Reply #3 on: July 01, 2007, 21:52:42 »
Quote from: "Disco-Ron"
I have 285's on 7's, they're a bit wide really, but i suspect that 265's would be ideal on 7's.....


All the manufactures figures I've seen for 285 tyres recomend a minimum of 7.5" wide rim.

That doesn't mean they woun't fit on a 7" rim but...
Chris

Various range rovers from 1986 to 1988 in various states
Locost sports car based on mk2 escort - currently working on brakes, fuel and wiring

Offline Disco-Ron

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7's and 8's
« Reply #4 on: July 01, 2007, 22:18:49 »
Quote from: "clbarclay"
Quote from: "Disco-Ron"
I have 285's on 7's, they're a bit wide really, but i suspect that 265's would be ideal on 7's.....


All the manufactures figures I've seen for 285 tyres recomend a minimum of 7.5" wide rim.

That doesn't mean they woun't fit on a 7" rim but...


Yeh i know, i was after eights. but i just couldn't get them, as it is, they are slightly over tyred... but they'll be ok til i wear them out, then i'll get 265's.....
gone from 200tdi.... to 300tdi... still with loads done to it, in fact, even more than the last truck...LOL!!!

Offline thermidorthelobster

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« Reply #5 on: July 01, 2007, 22:23:00 »
Not sure about other manufacturers, but if you look at individual tyre types on the BF Goodrich website, you can download a PDF which shows exactly what sizes will fit which rim widths.
David French
Tree-hugging communist
1999 Discovery II TD5 Manual
Patriot roof rack, QT Services diff guards front & rear, DiscoParts steering guard[/url], Autologic ECU upgrade, 2" Old Man Emu lift, 235/85R16 BF Goodrich All Terrains, Safari snorkel, DiscoParts jackable sills, Warn Tabor 9000

Ex Disco 200TDI, P38a 4.6HSE and 101FC 6x6 Camper.  Africa Trip Blog

 






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