Wheel recommendations
http://www.ebay.com/itm/22-MERCEDES-BENZ-WHEEL-AND-TIRE-PACKAGE-RIMS-FIT-MBZ-GL350-GL450-AND-GL550-/251307180993?pt=Motors_Car_Truck_Wheel_Packages&hash=item3a831343c1&vxp=mtr
The guys at Wheel Tech Tuning will put any tire you want on the rims and ship them to you.
You will want to request that whoever installs them balances them AFTER they switch the air pressure sensors from your stock wheels to your new wheels.
ALSO, your selection of tires dramatically increases when you go from the 21'' wheel to the 22" wheel. AND your price per tire dramatically decreases.


