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Join Date: Jun 2006
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Tires for stock 84 930 turbo with fuchs 16 x 7s & 8s

Finally replacing my 18y old tires that came with the car, sick of going <60 because of balance problems and fear of a blowout; what is the allowable lateral runout on the stock rims?

I see on the bbs' people talking about the largest tires they can put on their cars. Stock are 205s and 225s, will I gain any significant performance with the larger tires and are there trade-offs. What are the largest sizes for these wheels that will fit comfortably on the stock body and wheel setup?

Any recommendations on tire brands, looking for max dry, good wet traction, max cornering, with quietest ride, price not an issue, ware not an issue. So far looking at Mich, hear a lot about Kumos.

If I change to larger tires will I need to change the geometry, IE camber etc?

This car will probably not be tracked, just want the capability in case I get tempted by an occasional rally or twisty road, I do drive quite aggressively.

Thanks for any advice from those a lot more knowledgeable than me.
Old 10-25-2011, 04:36 PM
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Location: Weehawken, NJ
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My '79 also has 7's and 8's with 205s in the front and 225s in the rear. I haven't seen any need to go bigger than factory fitment. If and when I do, it will be because I've finally sprung for 17" Fuchs replicas. I currently run Yokohama Advan Neova AD08s and they are very good street/track tires:
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Old 10-28-2011, 11:12 AM
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I agree. Any decent tire in 205/225 combo will more than enough grip. I'm using Bridgestone Potenza RE760 on my 930 and I really like them.
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Old 10-29-2011, 05:24 PM
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A few years back on my sc (7/8 fuchs) I tried some Kumho Ecsta 712 in stock 205/55, 225/50, at least that was what was printed on the sides. The tires were tall and ballooned out at the sides. Friends said the tires made the car look like a vintage racer. The extra slop in the sidewalls made car vague and wallowy in corners and annoyed the heck out of me.

I switched them out for a correctly sized tire and went back to being happy.
Old 11-09-2011, 09:00 AM
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