Some wheels have the diameter and width cast into the wheel. But if it isn't and you have to measure, it isn't hard.
Measure the section width of the tire. Easiest way is to lay the tire/wheel flat on the floor, lay a straightedge across it, and measure from the floor to the bottom of the straightedge. Call this "Measurement A".
Measure the distance between the bottom of the straightedge to the wheel flange (Measurement B). Subtract this measurement from Measurement A.
Turn the tire/wheel over and do the same for the flange on the other side (Measurement C). Measurements B and C are normally the same or very close, but can differ if the flanges are of different thicknesses.
Then subtract about an inch and an eighth more. This is approximately the total thickness of two average-thickness flanges.
As an example only (even though they may be close to your actual measurements), if Measurement A is 10-3/4" and Measurements B and C are about 7/8", your wheel is almost certainly an 8" wide wheel. If A is 11-1/8" and B and C are about 1/2" instead, it's a 9".
Norm
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after that i checked a couple of websites on my kind of wheels, its true that 9.5'' dont exist..isnt there a easier way to find out on my own what's the width of my wheel?..lol because im totaly lost, the way that you explained ..sorry..but thanks anways
If you have a 275 you probably have a 9 inch wide wheel. That is a typical size to go on a 9.But thats not saying that it cant go on a wider wheel eighther.
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Joined: 10/21/2005 From: Central Islip, NY Status: offline
quote:
ORIGINAL: dmh@bones
If you have a 275 you probably have a 9 inch wide wheel.
agreed. what i do at work is we measure lip to lip, of course i use a tool thats specific for it. the casting thats actually stamped on the wheel isnt always correect. dont ask me why. cause ill measure it and the number will be different.
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You're measuring between the outsides of the wheel flanges with the outside caliper that's used for setting up the balancer. Dimension A minus Dimensions B and C in my sketch above.
Nominal wheel width is the width that the tire mounts to and is an inside measurement that you can't get to with the tire mounted, and that dimension doesn't matter for balancing purposes anyway. I'm guessing that your typical difference is that inch and an eighth, give or take a little.
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