Tire Advice 90 GT 17x8 Wheels

Sompin2do

New Member
Nov 30, 2004
59
0
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TX
After 21,000 miles I have to replace my Kumho Ecsta Supra 712's, 235x45x17s. I have them on Cobra Rs. A little history first. This car always had a problem with the stock front tires wearing fast on the inside shoulders. The Kumhos were no exception. I took it in to a reputable alignment shop in Garland TX called Garland Safety Lane. They recommended a modification on the strut towers, so I had it done. It seems to have fixed the problem, but I think I waited too long and now have a small amount of belt showing. I haven't been too crazy about these tires since the start and am looking for advice. Most of the driving is combined highway/city about 50 per day to and from work.
I've thought about castor/camber plates but most of what I've seen indicates they aren't necessay unless the car is lowered. True?
Would like to keep the price under $150.00 each. I appreciate any help.

Thanks
Mike
 
245/40R17 is the perfect size for 17x8. If you go too narrow then the sidewalls slant inward from the rim distorting the footprint resulting in less traction and wear on the outsides from the steel belts being twisted. If you go too wide, then the sidewall slants outward, distorting outward from the rim also distorting the footprint, resulting in loss of traction and pulling up on the tread on the sides wearing out the middle.

The range on say a 15" or even 16" wheel is wider but with a low profile tire where the sidewall is rather stiff and ungivving, 10 in difference in the width can make a huge difference.

C/C plates are just adjustable strut mounts. That alignment shop probally ground out the holes in the strut tower to do the same thing, but I doubt they did as well as a set of C/C's would do.
 
Sompin2do said:
Sorry, I'm asking for tire suggestions. The wear is tapered from inside to outside.
Thanks

That is excessive camber. Sorry, but they didn't solve your camber issue. C/C plates may be needed, and no there is no rule that is for lowered cars only.