Originally Posted by Mike Rainbird
If you are on a 7" rim, I wouldn't put anything more than a 215/40 on. If you are 7.5", then 235/40 will be fine, and the combination you are talking about is what I used to run on my 500bhp Sapphire. I wouldn't fit a 245 unless you had a MINIMUM of an 8" rim. The disparity will be no problem what-so-ever between a 215/40 and a 235/40 tyre on a 2wd car. Obviously if it is 4x4, then the rolling radius HAS to be the same

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Mike im going to be running..
front: 17x7's with 215/40 or 215/45
rear: 17x8's with 235/40
should this be ok
how can tyres be so hard to choose