Yes, the sidewall will be 4mm shorter. Tire sizes work like this 245 (tread width in mm)
40 (Ratio of sidewall to tread width) 18 (Bead diameter) so 245mm X 40% = 98mm, 255mm X 40% = 102mm. Hope this helps.
A 235 / 85 / 16 tire is ( 31.7 inches in diameter and has a section width of 9.3 inches ) A 245 / 80 / 16 tire is ( 31.4 inches in diameter and has a section width of 9.6 inches ) So , they are pretty close in physical size , but I don't know about the weight carrying capacity ( the 245 tire , with the lower profile . is 3 /10 th of an inch smaller diameter and 3 /10 inch wider )
No, a 245 tire is 245 mm wide. A 275 is 275 mm wide.
Doubtful, since the radial is bigger on the r17...
There were two original tire sizes for this car. 245/70R16 245/75R16
It is 245 mm wide at tread.
Yes you can
Yes you can
The biggest stock tire I have seen is a 245/70/16
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3996
NO, the 245 tire will be smaller in overall diameter and your speedometer will be off. Handling, ride, power, and fuel economy will be effected.
245/70/17 Most models come with 245/65R17