Right size tyre for 7" deep rim?

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Old Wolf - 22 Mar 2006 04:31 GMT

Currently I have 17" x 7.5" rims, and 235/45/17 tyres on the rear
and 215/45/17 on the front. (I wanted 235 all round, but there was
not enough clearance between the tyre and the strut tower on
the front).

I am getting rid of those rims for various reasons, and the shop
has many more new rims available in the 17" x 7" size. The
shop guy said that 235mm tyres on a 7" deep rim was not a
good idea and I may have increased tyre wear and reduced
traction. What is the optimal tyre size for the 7" rim?

Also, will there be any difference to my front wheels with the 7"
rim instead of the 7.5" (same tyre size, 215mm). I have about
1.5 degrees of camber on the front. I imagine the 7" version will
stand a little taller ? (greater overall wheel diameter). How will
this affect traction and handling?

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Nate Nagel - 22 Mar 2006 11:54 GMT

> Currently I have 17" x 7.5" rims, and 235/45/17 tyres on the rear
> and 215/45/17 on the front. (I wanted 235 all round, but there was
[quoted text clipped - 12 lines]
> stand a little taller ? (greater overall wheel diameter). How will
> this affect traction and handling?

I would guess "ideal" would be around 215 or 225. You want the tread
width to be about the same as the rim width to keep the tire "square."
To give you an exact answer you'd need to look at the spec sheet for the
exact tires you're considering.

I personally don't see the big deal with 235s on a 7" rim though...

nate

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John S. - 22 Mar 2006 15:02 GMT

Is this a tire shop? If not I would use one. The tire shops I've done
business should be able to match the wheel and tire.

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Mike Romain - 22 Mar 2006 15:44 GMT

Stock, Jeep puts 225's max on the 7" rims. They have an 8" rim for the
235's or the 31x10.5's that come on some models.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
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lugnut - 22 Mar 2006 17:11 GMT

>Currently I have 17" x 7.5" rims, and 235/45/17 tyres on the rear
>and 215/45/17 on the front. (I wanted 235 all round, but there was
[quoted text clipped - 12 lines]
>stand a little taller ? (greater overall wheel diameter). How will
>this affect traction and handling?

This is one location that shows your 7.5" wheel to be in the
approved range for a 235/45/17 tire. Many of the tire mfgrs
site have this info.

http://tinyurl.com/n92v3

Lugnut

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