Who makes a lower profile tire

Reply Subscribe

Thread Tools

Search this Thread

10-12-2007, 12:34 PM

#11

Heloha

Senior Members

Join Date: Jul 2005

Location: Southern California

Posts: 1,167

Likes: 0

Received 0 Likes on 0 Posts

My Ride: 2006 550i SMG

Quote:

Originally Posted by redwhiteblue' post='480799' date='Oct 12 2007, 03:22 PM

So will getting 19s with the 245/35/18 on all 4 tires proide the same rolling rate as my current 245/40/18s?

Sorry if this is confusing...I couldn't find a way to paste it side by side:

Stock Tire - 245/40R18 >Search Tires
Tire 1 - 245/35R19 >Search Tires
Tire 2 - 245/30R19 >Search Tires
Tire 3 - 245/30R20 >Search Tires

Section Width: 9.64 in 245 mm
Section Width: 9.64 in 245 mm
Section Width: 9.64 in 245 mm
Section Width: 9.64 in 245 mm

Rim Diameter: 18 in 457.2 mm
Rim Diameter: 19 in 482.6 mm
Rim Diameter: 19 in 482.6 mm
Rim Diameter: 20 in 508 mm

Rim Width Range: 8 - 9.5 in
Rim Width Range: 8 - 9.5 in
Rim Width Range: 8 - 9 in
Rim Width Range: 8 - 9.5 in

Overall Diameter: 25.71 in 653.03 mm
Overall Diameter: 25.75 in 654.05 mm
Overall Diameter: 24.78 in 629.41 mm
Overall Diameter: 25.78 in 654.81 mm

Sidewall Height: 3.85 in 97.79 mm
Sidewall Height: 3.37 in 85.598 mm
Sidewall Height: 2.89 in 73.406 mm
Sidewall Height: 2.89 in 73.406 mm

Radius: 12.85 in 326.39 mm
Radius: 12.87 in 326.89 mm
Radius: 12.39 in 314.70 mm
Radius: 12.89 in 327.40 mm

Circumference: 80.77 in 2051.5 mm
Circumference: 80.89 in 2054.6 mm
Circumference: 77.84 in 1977.1 mm
Circumference: 80.99 in 2057.1 mm

Revs per Mile: 809.0
Revs per Mile: 807.7
Revs per Mile: 839.3
Revs per Mile: 806.8

Actual Speed: 60 mph 100 km/h
Speedometer1: 59.9 mph 99.8 km/h
Speedometer1: 62.2 mph 103. km/h
Speedometer1: 59.8 mph 99.7 km/h

Speedometer Difference: - Speedometer Difference: 0.160% too slow Speedometer Difference: 3.745% too fast Speedometer Difference: 0.272% too slow
Diameter Difference: - Diameter Difference: 0.16% Diameter Difference: 3.62% Diameter Difference: 0.28%