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Looking for new light weight wheels
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<blockquote data-quote="David Hester" data-source="post: 9389714" data-attributes="member: 6794"><p>I started pretty much just agreeing with Jimmysidecarr observation that bigger rims than you need add other problems.</p><p>I'm a club racer with limited budget, in fact I've been an econoracer since the mid '77's. :shrug: I like cheap and buying 4-5 sets of 17" tires a season is MUCH cheaper than buying 4-5 sets of 18" tires.</p><p>That doesn't always work though because the 255/16 A6's on the A/Sedan car are about the same price as the 22.5x9.5/15" slicks I use on the new car. Still have to budget for 4-5 sets. </p><p></p><p>Moving on.</p><p></p><p>Did you miss that word in my statement? <em>nope. Got it. Read it several times</em> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> I didn't say the bigger wheel tire combo would be the same, I just said with the increase in wheel diameter you can't just directly add the additional weight of the wheel. <em>Why not?, both size tires weight 21 lbs and are the same diameter -within 2/10th inch or 1%. The 2.5 lbs difference is from wheel weight</em> There is a SMALL reduction in tire weight that goes with it. <em>21 lbs is 21 lbs </em> Rubber is less dense than aluminum but steel belts aren't. <em>Same diameter would mean same circumference which would mean the same length/ weight of steel belt, right?</em></p><p></p><p>Otherwise, Agreed. Gets back to my "just big enough to clear your caliper'... <em>or</em> what rules dictate. Years ago I bought some 16" ROHs from a World Challenge team when rule change mandated 17" rims. They finally gave up the series because bigger wheels meant other teams were using bigger brakes. Couldn't afford to keep up. </p><p>Bigger brakes, bigger wheels, BUT if you still have standard Mustang brakes, 17's clear and <em>can</em> have less rotational mass which is a good thing.</p><p></p><p>Economicswise, if you have 18 rims and can get the tires used AND cheap, of course, go for it.</p><p>But if rules allow shorter, physics (and economics) sez that's the way to go.</p></blockquote><p></p>
[QUOTE="David Hester, post: 9389714, member: 6794"] I started pretty much just agreeing with Jimmysidecarr observation that bigger rims than you need add other problems. I'm a club racer with limited budget, in fact I've been an econoracer since the mid '77's. :shrug: I like cheap and buying 4-5 sets of 17" tires a season is MUCH cheaper than buying 4-5 sets of 18" tires. That doesn't always work though because the 255/16 A6's on the A/Sedan car are about the same price as the 22.5x9.5/15" slicks I use on the new car. Still have to budget for 4-5 sets. Moving on. Did you miss that word in my statement? [I]nope. Got it. Read it several times[/I] :) I didn't say the bigger wheel tire combo would be the same, I just said with the increase in wheel diameter you can't just directly add the additional weight of the wheel. [I]Why not?, both size tires weight 21 lbs and are the same diameter -within 2/10th inch or 1%. The 2.5 lbs difference is from wheel weight[/I] There is a SMALL reduction in tire weight that goes with it. [I]21 lbs is 21 lbs [/I] Rubber is less dense than aluminum but steel belts aren't. [I]Same diameter would mean same circumference which would mean the same length/ weight of steel belt, right?[/I] Otherwise, Agreed. Gets back to my "just big enough to clear your caliper'... [I]or[/I] what rules dictate. Years ago I bought some 16" ROHs from a World Challenge team when rule change mandated 17" rims. They finally gave up the series because bigger wheels meant other teams were using bigger brakes. Couldn't afford to keep up. Bigger brakes, bigger wheels, BUT if you still have standard Mustang brakes, 17's clear and [I]can[/I] have less rotational mass which is a good thing. Economicswise, if you have 18 rims and can get the tires used AND cheap, of course, go for it. But if rules allow shorter, physics (and economics) sez that's the way to go. [/QUOTE]
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