jayro
SHO Member
I had no idea your car was blue.
Heck yeah!!!!
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I had no idea your car was blue.
17x7.5
Offset: +45mm Backspacing: 6.02" Bolt Pattern: 5-108
Rec. Tire Size:215/50-17
Weight: 22.2lbs.
^Will these specs fit correctly including the rear on a 1990 SHO? And if so, will 225's fit okay?
Yes. But IMO stay with the 215. Fits the rim perfectly, and the extra width won't buy you anything.
7.5" width is still in the recommended range of a 225/45 or even a 235/45.
I understand you've had good luck with the narrower tires, however, I had great luck with wider tires (235/45/17 on 7" width) and that is also with track use. That was a bit on the edge of what I'd run, but I was taking the turns just as fast as the much better balanced cars on track. I prefer overall grip over response as that time and reaction can be learned. Getting a tire with a stiffer sidewall will go a long way as well.
Generally, the "allowable" you mention is well within "optimum" range as we've seen people use a wide variety of sizes on things (stretched and the like).
Oh dang, you said aftermarket, sorry.
Here you go:
17x7 cant remember
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@ the fikse's Matching the tread width to the rim stiffens the sidewall.....as in a 215 on a 7.5" rim.
You lose overall grip with a wider tread when the sidewalls are bent inward. When the only guys in front of me on the track are those with track rubber, it has worked well for me.
You have to experiment a bunch with tire pressures to get a too-wide tire to work with a narrower rim. I learned long ago that a 225 tire on a 6" slicer SUCKS. running 50 hot psi and the tires still rolled. NEVER have had an issue since with 215s on a 7.5".
Put a damn 275 on a slicer for all I care!