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FD race rubber sizes

Old 10-10-05, 05:13 PM
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FD race rubber sizes

Ok I figured that I would run 255/40/17 in the front and 275/40/17 in the back. The problem that I've encountered is that both the kumho 710s and Hoosier AS05s only come in 245/40/17 and 275/40/17. Either Im stuck with that setup or I have to go with something like a 275 in the front and a 315 in the rear. I dont have fender flares and Id rather not get midevil on my fender wells with a baseball bat. Any suggestions?
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Old 10-10-05, 06:41 PM
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Is there a reason why you want staggered sizes? Why wouldn't 275/40's be fine for you all around? They should fit fine with no fender mods.

-Andy
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Old 10-10-05, 06:45 PM
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I agree with Andy, what wheel sizes do you have?
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Old 10-10-05, 11:22 PM
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Originally Posted by AMRX7
Is there a reason why you want staggered sizes? Why wouldn't 275/40's be fine for you all around? They should fit fine with no fender mods.

-Andy
This guy knows what he is talking about.

275s all around would be my recommendation unless you have some reasons for something else.
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Old 10-10-05, 11:37 PM
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Originally Posted by AMRX7
Is there a reason why you want staggered sizes? Why wouldn't 275/40's be fine for you all around? They should fit fine with no fender mods.

-Andy

No I would love to run 275s up front. I just didnt think 275/40/17 hoosiers or 710s would fit up front without rubbing bad. What kinda size and offset would be the best to use to avoid rubbing? Thanks for the info.
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Old 10-11-05, 02:15 AM
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I ran 17x10's with a 7.5" backspace, which I think is about a +50 offset. I also ran some 18x10.5's with +43 offset all around, but those required some fender treatment (fully rolling the lip in the front, but only a mild roll in the rear). That was using a 285/30 tire.

-Andy
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Old 10-11-05, 02:25 AM
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Originally Posted by AMRX7
I ran 17x10's with a 7.5" backspace, which I think is about a +50 offset. I also ran some 18x10.5's with +43 offset all around, but those required some fender treatment (fully rolling the lip in the front, but only a mild roll in the rear). That was using a 285/30 tire.

-Andy

so the 17x10s with a +50 offset didnt require any fender rolling? hmm interesting. Looks like Ill be running those next season then. Thanks.
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Old 10-11-05, 02:33 AM
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The 17x10's are a pretty common fitment for autoxers and track junkies. I've seen sets of CCW's used in the $1K range, and they are about $1750 new (don't quote me on that). CCW knows the RX-7 fitment for that size.

-Andy
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Old 10-11-05, 02:40 AM
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Originally Posted by AMRX7
The 17x10's are a pretty common fitment for autoxers and track junkies. I've seen sets of CCW's used in the $1K range, and they are about $1750 new (don't quote me on that). CCW knows the RX-7 fitment for that size.

-Andy

yeah I figured I would have to go with CCWs considering the offsets would be hard to find on most other wheels you dont custom order. I dont guess you have any closeup pics of your front fenders and the rolling you did do you? Id like to see how it looks. Maybe rolling them for 285s wouldnt be such a bad thing.
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Old 10-11-05, 11:14 AM
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Sorry, those fenders are gone. For the 18's I had to roll the lip in the front pretty flat (the tabs that the liner attaches to also). In the rear you might not need to do it at all. With the Kumhos, you could probably get away with a 18x9.5 and the 285 tire. With a 10.5 inch wheel, the wheel sticks out past the tire on both sides so unless you really need to stretch that tire it's probably not a huge deal. You can get SSR Comps in both the 10.5 and 9.5 widths (about $500 each from TireRack). I think the 9.5 with a +37 offset worked.

-Andy
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Old 10-11-05, 11:49 AM
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I have Andy's old 18x10.5's and initially rolled the front and rears. The tires were catching the lips and pulling them down in the front occassionally so I actually trimmed the inner lips away (10oclock to 2 oclock is gone). I have no more issues with the tires ripping the lips down. Out back I have had zero fender contact and used a professional grade fender roller that bolts to the hub to gradually flatten them.

I have 285/30/18's all around... and it handles awesome. Check out the December '05 issue of Sport Compact Car Magazines "Ultimate Street Car Challenge." You'll see my handling results there.
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Old 10-11-05, 04:52 PM
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Originally Posted by gnx7
I have Andy's old 18x10.5's and initially rolled the front and rears.

Got pics of your front fenders?
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