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RX-7 1st Gen Specific (1979-85) RX-7 1979-85 Discussion including performance modifications and technical support sections

 
 
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Old 06-27-2008, 09:25 AM   #12
Rogue_Wulff
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The +15mm offset works great on FB's, and *should* eliminate the issue with the SA/Rewind combo. The Rewinds have a +20mm offset, which moves the edge of the tire 5mm closer to the spring.
I have 15x7 +15mm offset 4x110 wheels, with 205/50-15 tires. The car has a very old set of ST springs, which have lost there integrity, so the car sits VERY low. By low, I mean ~1 to 1.5" off the bumpstops, without me in it. That's after I cut 1.25" off the rear bumpstops.
I have very minor rubbing on the rear fender lips, after rolling, since I cut the bumpstops.
I have acquired Grond Control coilovers with Eibach springs, and matching rear Eibach racing springs, which should raise the car back up. Once those are installed, I plan to step up to a 225/45-15, on those same wheels. The 225/45-15 is 20mm wider than a 205/50-15, but within 3-4mm diameter, so the speedo will remain dead on.

However, if there was an inexpensive source for adapters, I might consider a set, for more wheel options. I do need another set of wheels, for race rubber......
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