tbone

Luke,

I'm moving up to 20" rims for my '03 E500.

I'll be running

245/30/20 90Y XL
285/25/20 93Y XL

Are my load ratings OK?

Luke@tirerack

for those sizes on a W211 XL/RF tires required and you must maintain higher
tire pressure levels of 42psi for proper load.

but your sig says 19" wheels???

tbone

Luke, I have 20" rims on order, and the tires I'm looking at have these load ratings. I noticed that, in general, the load ratings among the various tire brands on this 20" tire size are lower than what I have now on my 19" tires.

What do you mean by XL/RF? Does that mean the tires in my initial post are OK, load wise?

Thanks

Luke@tirerack

XL = extra load
RF = reinforced

so, yes the tires you listed would be suffcient providing your run 42 psi in them

tbone

As usual, thanks for your help, Luke!

I'll run them at 42psi!