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Best tire size for 18 x9.5 C5 wheels???

This is a discussion on Best tire size for 18 x9.5 C5 wheels??? within the Wheels and Tires forums, part of the General Help category; I would like to fill the wheelwell up, keep the same size on all 4 corners and prefer a taller ...

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    Best tire size for 18 x9.5 C5 wheels???

    I would like to fill the wheelwell up, keep the same size on all 4 corners and prefer a taller sidewall (40 series maybe??) than the "low profile" look. What mfg. as well???? Thanks.........Mark...

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    Member Blue28's Avatar
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    275/40/18s will work fine in the rear, but you'll probably get some rubbing on full lock and possibly on hard cornering with 275/40/18s up front.

    I'm running Falken 452's in a 275/40/18s rear which have been really good tires,and there inexpensive, about $156 at DTD.

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    thanks... I was hoping I could run 275/40's on all corners.. Anybody else
    run 275/40's??? I just like the extra sidewall height of the 40 series....

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    Senior Member JaycenK's Avatar
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    I do but I'm a 17 inch wheel with no problems

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    Quote Originally Posted by JaycenK View Post
    I do but I'm a 17 inch wheel with no problems
    Yea, but that is the factory size for the WS6

    Anybody??? I have used the search function and read alot of threads.. I see most people will run 275 or 285/35/18's, but not much on the 40 series..See, I have done my homework, but still can't seem to find the right answers..

    Should I just go with the 35 series and get used to it?? If so, does the 285/35/18 fill out the wheelwell?? They would still have a shorter sidewall than a 275/40/18 tire by .40 inches, maybe that is not enough to notice???
    2001 WS6 Trans Am -Black/black,lt's,Corsa,cam,AFR's
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    1967 RS Camaro - Dk. Blue, white stripes, 468/476hp

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    Or go with a 295/35R18. They will gain you some width but the overall diameter is .6 shorter.
    275/40R18=26.7" OD
    295/35R18=26.1" OD
    285/35R18=25.9" OD which is shorter by .80 not .40 as you had stated in your post.
    Got my info from Tire Rack website....

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    Quote Originally Posted by T/A Turbo 1989 View Post
    Or go with a 295/35R18. They will gain you some width but the overall diameter is .6 shorter.
    275/40R18=26.7" OD
    295/35R18=26.1" OD
    285/35R18=25.9" OD which is shorter by .80 not .40 as you had stated in your post.
    Got my info from Tire Rack website....
    I stated SIDEWALL height, which is 4.33" on the 40 series vs. 3.93 on the 35
    series = .40 inches.. Got my info from Tire Discounters.. But the 295/35/18 might be a better fit out back... Thanks T/A turbo, good idea...

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