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C-Kwik »
https://forums.nicoclub.com/c-kwik-u426.html
Thu May 04, 2006 8:35 am
You'll probably want to read the terms of the rim/tire protection package as I ould think it would outline the specifics there.
The TPMS is not sensetive to tire size. Only pressure.
It's not always a good aiea to simply put the widest tire on a wheel that will fit. First off it may look funny. secondly, it changes the shape of the contact patch. Enough that even tire wear can be a problem. The 245's mounted on the rear 18" wheels seem to have a problem with center treadwear. This has been a common problem that I suspect comes from mounting a relatively wide tire on a wheel. I speculate it bows out the center of the tread slightly putting most of the pressure and wear there. I went through 2 sets of tires on my G and both times the rear centers wore first. The front tires and the outer treads on the rear had plenty of life left in them.
As far as the tire sizes, I think tirerack's optional tire size info is off for the rear. The OE 19" wheel is 8.5" wide. I you look at every 275 tire that they list for it, each has a minimum rim width of 9".
You also need to make sure when you choose tire sizes, to keep the diameter ratio between front and rear tires very close. The VDC will not be happy if it's too far off as it will think the tires are slipping all the time.