Quote:
Originally posted by itsaysjack
here are the measurement differences between the stock 245-60-18 tire and the nitto 285-60-18
i'll list the stock sizes first:
sidewall 5.8" vs. 6.7"
radius 14.8" vs. 15.7"
diameter 29.6" vs 31.5"
circumference92.9" vs 98.8"
revs per min 682.0 vs 641.0
the speedo reading w/ the nittos is 6.4% too slow. when the speedometer reads 60mph you are actually traveling 63.8 mph
i made a little chart fto keep in the car.
the numbers are rounded
23 mph =25 mph
28.5 mph =30 mph
33 mph =35 mph
38 mph =40 mph
42.5 mph =45 mph
52 mph =55 mph
57 mph =60 mph
61.5 mph =65 mph
66 mph =70 mph
100 mph =106.4
200 mph = 212.8
hope this helps.....the tires look great, ride great and are quite.