wing

I either suck at searching or it was asked a long time ago :P

How wide of a tire can you fit on the front of the ISF? What about the rear?

I can do the math for the width of the rim, but I'm more worried about fender clearance.

I'm thinking of going 255 up front (square setup) will that fit? The tire will bulge a bit on the rim I understand that.

Or perhaps 245 on the front and 255/265 or 275 on the rear, what can we fit back there?


I was going to get new rims and tires for the track, but for now I'm just going to use the OEM rims but 225 is way too skinny up front.

idoke1

iTrader: (5)

Here is the link you may want to look at

https://www.clublexus.com/forums/is-...and-downs.html

wing

Thanks. Looks like 245/35/19 on front and 275/30/19 on back is the answer.

lobuxracer

iTrader: (2)

Especially with the '12 or later wheels. They're 8.5 front and 9.5 rear.

bnizzle87

With the 08-11 wheels (2 styles, same sizes), I have seen members upsize primarily to the following:

front: 245/35
rear: 275/30 or 285/30

To have the same OD and similar revs/mi and MPH calculation to the stock tires, one would have to get the following:

front: 255/35
rear: 295/30

Of course, this isn't really within spec with the 8 and 9 in widths respectively.