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Motorsports & Track Forum
From Auto-X to Trackday to Racing and Professional Motorsports this is the place to discuss making BMWs fast

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Old 07-25-2008, 03:42 PM   #1
jbr
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Question tire/wheels size?

Ok, so I have two sets of factory wheels available 18" and 19" for my s/c e46 m3 and can't decide on which to use for track days?

Price is not a factor, since both size Hoosiers cost around the same ($300/per).

Size is a factor, because for 18"--f245 and r275 are available, but in 19'' only f235 and r265.

Which will you get? and why?
thanks,
JB

ps. my car has Dinan's 3.91 diff.

Last edited by jbr; 07-25-2008 at 03:46 PM.
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Old 07-25-2008, 06:36 PM   #2
CRSmoak
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take the 18's
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Old 07-25-2008, 06:57 PM   #3
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I would probably go 18" for weight.

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Old 07-25-2008, 08:23 PM   #4
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18's for sure, more rubber on the ground if what you wrote is true, and they should be slightly more light weight...
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Old 07-26-2008, 01:23 PM   #5
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The only reason to go with the 19s is if you're going to go with bigger brakes that require the 19.

Otherwise go with the 18s. The decreased deflection from the shorter sidewall of the 19 is not worth the extra weight and the increased chance of damaging the tire/wheel when you're on and off the curbs.
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Old 07-30-2008, 06:37 PM   #6
jbr
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Thanks for your suggetions........now I have no option but the 19"s, since my 18"s were stolen sunday night from storage!!!
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Old 07-30-2008, 08:00 PM   #7
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