Mercedes R-Class (W251) Tire Sizes and Rim Specifications by Model Year and Trim

The Mercedes R-Class (W251) lineup features a variety of tire size markings that vary depending on the model year and specific trim. From base to top trims, tire sizes commonly range between 235/55R17 to 255/50R18. Rim widths typically range from 7.5 to 8.5 inches, paired with diameters of 17 or 18 inches.\n\nEarly model years generally used 17-inch rims with a width around 7.5 inches, focusing on comfortable ride quality. Higher trims and later production years upgraded to 18-inch wheels with wider rim widths (up to 8.5 inches) to improve handling and aesthetics.\n\nWhen comparing trims, pay attention to the exact tire size marking printed on the sidewall, as variations in width or aspect ratio affect handling and compatibility. Ensuring the correct rim width and diameter pairing is critical for safety and performance, so always cross-reference the vehicle’s specifications or consult a professional before replacement.\n\nThis quick reference helps Mercedes R-Class (W251) owners understand factory tire setups and make informed decisions about aftermarket wheel and tire selections tailored to their specific model year and trim.

For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Mercedes R-Class (W251).