Suspension/Wheels/Tires/Brakes

whats the biggest tire an 18 by 9.5 inch rim can handle?

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Old Aug 24, 2002 | 08:21 PM
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From: raleigh, nc
whats the biggest tire an 18 by 9.5 inch rim can handle?

whats the biggest tire an 18 by 9.5 inch rim can handle? Thanks-BB
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Old Aug 24, 2002 | 08:48 PM
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From: Minnesota/ California
probably 285's for street/ road course.
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Old Aug 24, 2002 | 09:25 PM
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^yup.....that is the best bet. however, i HAD run some 295/30's about a year ago......however, i guess that you do know that differen tire brands filll the wheel better. sometimes it is simply a trial and error thing that you must do for your own satisfaction....

louis
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Old Aug 24, 2002 | 10:11 PM
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A 285/30-18 should really be on a 10 x 18. A 9.5-inch wide wheel should have a 265/35-18...
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Old Aug 25, 2002 | 01:06 AM
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Look at the tire spec sheets (many are available on TireRack.com or the tire manufacturer's web site) for the tire models you are considering. Most 285/30-18 list 10" as the minimum rim width, but there are a few that go down to 9.5". The short sidewalls don't give you a lot of lee-way (sp?).

I think Michel (can't remember his forum name -- rx7tt or something like that) is running 18x9.5" Volks with 285/30-18 tires on the street -- you might contact him for guidance.

Also, wheels and tires have different real widths -- my 9.5" Volks seem to be the same width as the tread of my 265/40-17 S-03 tires, but my 10" CCW rims are actually wider than the widest point of my 285/30-18 BFG g-Force R1 tires.

-Max
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