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tire size for 18x10.5

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Old 05-07-2011, 12:04 PM
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Default tire size for 18x10.5

Hey guys, so i have a 2000 Trans Am with 18" vette wheels. the fronts are 18x9.5 and have beat 275s on it now, so ill just replace those with 275s cuz they look fine....the rears are 18x10.5s and have 285s on them, the rim actually sticks out past the tire.

im looking at picking up a set of 295/35/18s for the rear but not sure if that will fit the rim properly or if i should go 305? anyone know from experience or have pictures of them on their cars? Also a little concerned with rubbing, not sure how 295 or 305s fit in the rear without modification (i really have no desire to do so unless its minimal, ie cutting a bump stop or something)

any help would be great, used the search function but the threads i found either didnt seem to have the proper information or people talking about 285s on a 10.5 like thats ok......im not a big fan of the rim past the tire.
Old 05-07-2011, 12:07 PM
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https://ls1tech.com/forums/wheels-ti...must-read.html

285 is more for a 9.5" rim maybe even a 10" depending on the tire as some run narrower. A 295 or 305 is what you want on a 10.5" wheel. What tire are you putting on there? and you may want to roll the fender as an insurance so save from slicing tires on bumps!
Old 05-07-2011, 12:32 PM
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Originally Posted by cookba
https://ls1tech.com/forums/wheels-ti...must-read.html

285 is more for a 9.5" rim maybe even a 10" depending on the tire as some run narrower. A 295 or 305 is what you want on a 10.5" wheel. What tire are you putting on there? and you may want to roll the fender as an insurance so save from slicing tires on bumps!
fender rolling was one of the things i wasnt interested in but may have to look into it.

Im looking at picking up some NT05s. Having a hell of a time finding them in 305s but found them in 295/35/18s for $229/ea. Do you know for a fact they will hit on bumps or just a precaution?
Old 05-07-2011, 02:29 PM
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i got 295/35/18 on my c6 dd z06 wheels. they fit fine, had to hammer the inner fender a lil bit but no fender rolling was needed.
Old 05-07-2011, 02:33 PM
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i have a 315 on my 10.5" wheels and it fits perfect.
Old 05-07-2011, 03:47 PM
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Originally Posted by Ellsworth
i have a 315 on my 10.5" wheels and it fits perfect.
is that whats on the car in the sig?

so i should be good with 295s. ill post some pics of what the wheel looks like..its hideous! (i mean the wheels are in decent shape, just how the tires on it)
Old 05-07-2011, 03:53 PM
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Originally Posted by WS9 Formula
i got 295/35/18 on my c6 dd z06 wheels. they fit fine, had to hammer the inner fender a lil bit but no fender rolling was needed.
x2
Old 05-07-2011, 03:59 PM
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315's on my 18X10.5" DD c6 z06s..

cut the bumpstop and lots of hammer.
Old 05-10-2011, 09:15 PM
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315s on my C5 DD
Old 05-10-2011, 09:25 PM
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where the hell are yall finding these 315's?? im about to actually get the 10.5 c6 z06 wheels but cant find anyone who has 315/35-40/18.
Old 05-10-2011, 09:30 PM
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I have 295/35-18's on mine. They're KDW2's and are a pretty wide and meaty tire for a 295. I didn't have to do any cutting, rolling, or hammering and I'm lowered on stranos.
Old 05-10-2011, 11:19 PM
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Originally Posted by WS9 Formula
i got 295/35/18 on my c6 dd z06 wheels. they fit fine, had to hammer the inner fender a lil bit but no fender rolling was needed.
Same here. I'm running Goodyear GS-D3's, which I don't think are made anymore, on BMR springs and Koni shocks.
Old 05-11-2011, 01:25 AM
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Originally Posted by s25hanh
where the hell are yall finding these 315's?? im about to actually get the 10.5 c6 z06 wheels but cant find anyone who has 315/35-40/18.
I use 315/30/18. found mine on tire rack a year ago. I think toyos, nittos, etc makes a 315 tire.
Old 05-11-2011, 02:05 AM
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315/30/18 toyo r888's here on 10.5" dd c5's. had to bfh the usual area on each side, but thats it while its stock ride height. when i finally lower it i will have to roll the fenders. i rubbed one side once under hard acceleration coming out of a turn


Old 05-11-2011, 05:28 AM
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Originally Posted by s25hanh
where the hell are yall finding these 315's?? im about to actually get the 10.5 c6 z06 wheels but cant find anyone who has 315/35-40/18.
Most of the 315's for an 18" wheel are 30 series tires, which sucks. However, Nitto does make the NT05R in a 40 series, its the drag radial version of the NT05. They sell it at discounttire.com.
Old 05-11-2011, 06:44 AM
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Originally Posted by HWI
Most of the 315's for an 18" wheel are 30 series tires, which sucks. However, Nitto does make the NT05R in a 40 series, its the drag radial version of the NT05. They sell it at discounttire.com.
ahh okay. thank you, searching forever and couldnt find anything.
Old 05-11-2011, 08:24 AM
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no tire size will fit. You might as well sell them to me like I said.


j/k man. 305s should fit that 10.5" wheel just fine
Old 05-11-2011, 09:40 AM
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I run 295/35R18 and very happy with them.

A 275/35R18 is perfect for a 9.5" wide wheel
Old 05-11-2011, 11:42 PM
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. . . . . . I got some Falken Azenis 315/30R18's for sale, . . . . . . . .
Old 05-12-2011, 08:38 AM
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Originally Posted by 02TransAm/Batmobile
. . . . . . I got some Falken Azenis 315/30R18's for sale, . . . . . . . .
.............new??


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