: 17" and 18" wheels on '05 sts



Tim Pascale
12-29-12, 09:26 PM
Does any one have a tire set recommendation for me (brand and series) other than the OE Michelin Pilots. The Michelins were shot after 30000 miles. I go to tire rack.com and it does not let you pick two different sizes. Some manuf's don't make the 18" size. I need an all-season tire for Omaha NE. Lots of ice now.
The front tire is 235/50R 17 and the rear is 2585/45R 18. Thanks

orange57
12-29-12, 09:43 PM
I recently purchased some Yokohama YK580's, and they have been pretty good so far.

dannyquest
12-29-12, 11:07 PM
Tim, Lots of folks likes Continental DWS. Dry,wet snow

EChas3
12-29-12, 11:26 PM
I'm surprised you don't have traction/stability control system issues. Your car requires the same circumfrance tire on all four wheels, which aew the same diameter from the factory. I like the Continental DWS 235/50R18. I debated getting the 255/45R18 but gaining 20mm (3/4") treadwidth wasn't as important as a little more sidewall to soften the ride.

Tire Size Calculator (http://www.1010tires.com/TireSizeCalculator.asp)


Stock Tire - 235/50R17 Search Tires Tire 1 - 255/45R18 Search Tires
Section Width: 9.25 in 235 mm Section Width: 10.03 in 255 mm
Rim Diameter: 17 in 431.8 mm Rim Diameter: 18 in 457.2 mm
Rim Width Range: 6.5 - 8.5 in Rim Width Range: 8 - 9.5 in
Overall Diameter: 26.25 in 666.75 mm Overall Diameter: 27.03 in 686.56 mm
Sidewall Height: 4.62 in 117.34 mm Sidewall Height: 4.51 in 114.55 mm
Radius: 13.12 in 333.24 mm Radius: 13.51 in 343.15 mm
Circumference: 82.46 in 2094.4 mm Circumference: 84.91 in 2156.7 mm
Revs per Mile: 792.3 Revs per Mile: 769.5
Actual Speed: 60 mph 100 km/h Speedometer1: 58.2 mph 97.1 km/h
Speedometer Difference: - Speedometer Difference: 2.962% too slow
Diameter Difference: - Diameter Difference: 2.89%