Another Tire Thread

[steved0x]

Originally Posted by Racer Boy

Are you running the 225/45/17's on the stock rims? The recommended rim width for that size is 7.5 at the narrowest, but the stock rims size is 7.0.

If you are running the stock rim size, have you noticed any issues with the slightly too-narrow rims with those tires? Do they rollover on the rim when running hard?

Stock 7" rims, and I have run on those rims in 225/45/17:

Sumitomo HTR Z III
Hankook R-S3
Toyo R888

No problems whatsoever and have never had any trouble getting them mounted. The first one out of these was the Hankook which I got from Tire Rack and they confirmed it was an approved size for the Boxster on a 7" wheel.

I just did a quick check on Tire Rack and all 3 of the tires listed above are approved on a 7"-8.5" wheel, with the section with the various tire measurements being made on a tire mounted to a 7.5" wheel.

Each tire brand may be different so that may be why your tire didn't list 7" as an approved wheel width?

[Racer Boy]

Originally Posted by JayG

7" are fine, at least with my Dunlop Star Spec and Sumi HTR ZIII in 225/45-17
Go to Tirerack an d look at the tire specs and you will see that the rim width range is 7"-8" or 8.5" for 225/45

I tracked both and no rollover issues

Originally Posted by steved0x

Stock 7" rims, and I have run on those rims in 225/45/17:

Sumitomo HTR Z III
Hankook R-S3
Toyo R888

No problems whatsoever and have never had any trouble getting them mounted. The first one out of these was the Hankook which I got from Tire Rack and they confirmed it was an approved size for the Boxster on a 7" wheel.

I just did a quick check on Tire Rack and all 3 of the tires listed above are approved on a 7"-8.5" wheel, with the section with the various tire measurements being made on a tire mounted to a 7.5" wheel.

Each tire brand may be different so that may be why your tire didn't list 7" as an approved wheel width?

I found the 7.5" recommendation in a generic chart I found somewhere.

Thanks for the information!