Quote:
Originally posted by Oldsman@Jul 23 2005, 10:49 AM
actually a 245/35 would be just a little wider than a 245/40
either one will fit fine. the 245/35 r18 would keep your speedo close to accurate. with a 245/40 you will be off by approx 3 mph.
i have 255/40 r18 on 18x7.5 with 42mm offset and they fit fine. but that is max width and diameter right there. oh not running air.
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we have strict official rules here about tire sizes .. too bad
considering that the original measurements for the alero are:
215&60, 6x15@ 42mm offset
oldsmans wheel circumference is plus 3,47 percent, so the speed change is.
in wideness the tires are coming out of the wheel holes +1,91 centimeters with 42mm offset. it wouldnt be allowed in germany coz we have a 2 percent limit.
245/35 would be minus 1,46 percent, its / like oldsman said the close to stock.
my opitimum size for the ho is following
225/40 theire not too expensive
8x18 rim, (as wider the rim is as wider appears the tire to be)
Offset 40 mm
with this measurements the changes will be the following
- tire gummi size over the rim will decrease from 12,9cm to 9,0cm
- tire circumference / speedo change -0.28 percent
- the tire will be coming out of the hole +2.74 cm in wideness (2.54cm w/ offset 42)
think id look best
hey oldsman do you think there will be enough space for another 1 cm tire wideness in the fender?