2008 Mercedes-Benz SL550 Tire Sizes
Factory original equipment (OE) tire specifications.
Base
FrontTire Size
255/40ZR18
Load Index
95
Speed Rating
W
Base
RearTire Size
285/35ZR18
Load Index
97
Speed Rating
W
w/AMG Sport Pkg.
FrontTire Size
255/40ZR18
Load Index
95
Speed Rating
Y
w/AMG Sport Pkg.
RearTire Size
285/35ZR18
Load Index
97
Speed Rating
Y