The 305/40R21 tire size is commonly found on full-size luxury SUVs and performance SUVs, including the Porsche Cayenne, BMW X5 M, and Mercedes-Benz GLE AMG variants. This wide, low-profile size is typically fitted on rear axles or as part of staggered fitment setups on high-performance models. It is also used on some premium crossovers and sport utility vehicles that prioritize handling and aesthetics over ride comfort.
At the budget end, Falken and Nankang offer 305/40R21 options that provide acceptable performance for everyday driving at a lower cost. Mid-range shoppers should consider Continental or Hankook, which deliver a strong balance of longevity, wet traction, and ride quality at a reasonable price point. For premium performance, Michelin and Pirelli are top choices, offering superior handling, noise reduction, and durability expected by luxury and performance SUV owners.
Shoppers looking for the best deals on 305/40R21 tires should consider purchasing in late winter or early spring, when retailers often discount summer and all-season inventory to clear stock. Buying ahead of summer or before winter sets in can help avoid demand-driven price spikes common with this specialty size.
Due to its large size and specialized fitment, 305/40R21 tires typically carry above-average price tags, with costs generally ranging from around $180 to over $450 per tire depending on brand and performance rating.
Check back soon or search above.
Enter your email and a target price — we'll email you when 305/40R21 tires drop to that price or lower.
The 305/40R21 tire size is commonly found on full-size luxury SUVs and performance SUVs, including the Porsche Cayenne, BMW X5 M, and Mercedes-Benz GLE AMG variants. This wide, low-profile size is typically fitted on rear axles or as part of staggered fitment setups on high-performance models. It is also used on some premium crossovers and sport utility vehicles that prioritize handling and aesthetics over ride comfort.
Shoppers looking for the best deals on 305/40R21 tires should consider purchasing in late winter or early spring, when retailers often discount summer and all-season inventory to clear stock. Buying ahead of summer or before winter sets in can help avoid demand-driven price spikes common with this specialty size.
At the budget end, Falken and Nankang offer 305/40R21 options that provide acceptable performance for everyday driving at a lower cost. Mid-range shoppers should consider Continental or Hankook, which deliver a strong balance of longevity, wet traction, and ride quality at a reasonable price point. For premium performance, Michelin and Pirelli are top choices, offering superior handling, noise reduction, and durability expected by luxury and performance SUV owners.
Due to its large size and specialized fitment, 305/40R21 tires typically carry above-average price tags, with costs generally ranging from around $180 to over $450 per tire depending on brand and performance rating.