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Your opinion on tires.


justin260z

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Those Hankooks look nice and thyanx for the chart 240ZMan.

You guys know those tire size caculator sites that says "(X) amount of

tire diameter above 3% original size risks brake failure"?

Is there any truth to that?

I'v been using this site here which seems to be pretty good I guess.

http://www.1010tires.com/TireSizeCalculator.asp?action=submit

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Hmmm, I haven't seen the 3% warning before. I can imagine a few reasons to be concerned, but none seem likely enough to put a big warning up.
From my days selling tires, I recall that there were several issues around the 3% figure. Most had to do with varying local regulations, and load capacity safety buffers.

But the brake warning (as I recall) had to do with modern cars with anti-lock brakes. Which is most anything these days. I seem to recall that some ABS controllers get fatally confused if the diameters of the tires are not all similar. After all, ABS works by comparing the relative rotation speed of all the tires. Not a problem as long as all the tires are the same size, even outside the 3% window. But most people don't change their spare to match. So if you have a flat on one of these ABS equipped cars and your spare tire is not within 3% of the rest of the tires, ABS problems can arise.

And ABS problems can be expen$ive! Which is probably the reason for the warning. "We told you not to do that!"

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From my days selling tires, I recall that there were several issues around the 3% figure. Most had to do with varying local regulations, and load capacity safety buffers.

But the brake warning (as I recall) had to do with modern cars with anti-lock brakes. Which is most anything these days. I seem to recall that some ABS controllers get fatally confused if the diameters of the tires are not all similar. After all, ABS works by comparing the relative rotation speed of all the tires. Not a problem as long as all the tires are the same size, even outside the 3% window. But most people don't change their spare to match. So if you have a flat on one of these ABS equipped cars and your spare tire is not within 3% of the rest of the tires, ABS problems can arise.

And ABS problems can be expen$ive! Which is probably the reason for the warning. "We told you not to do that!"

Yeah, go figure though.

Mordern day stuff is the reason why my favorite rim company,Tenzo,

don't make any style for Z cars cause of that front wheel drive

offset crap.

Dang postive offset :mad:., +22, whats that about :rolleyes:

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