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315/40R21 Tires – Prices, Fitment & Best Deals

Shopping for 315/40R21 tires? We track 48 315/40R21 tire models from trusted retailers, with prices currently ranging from $161.22 to $946.45 (averaging around $396.98). Compare live pricing side by side across SimpleTire, Tire Rack, and Tire Agent to find the best deal before you buy — whether you need a reliable all-season option, a performance-focused tire, or something built for daily commuting. Use the filters below to narrow results by brand, load index, or speed rating, and check the compatible vehicle list further down the page to confirm the right fit for your car.

Compare 315/40R21 Tire Prices

48 products found

315/40R21 Price & Spec Summary

Lowest Price $161.22
Average Price $396.98
Highest Price $946.45

Based on 48 315/40R21 tires currently listed on TireSizeMatters.

Load Index: 111113115
Speed Rating: HTVWY

Frequently Asked Questions About 315/40R21 Tires

How much does a 315/40R21 tire cost?

Prices for 315/40R21 tires on TireSizeMatters currently range from $161.22 to $946.45, depending on brand and model.

What load index and speed rating should I choose for 315/40R21?

Common load indexes for this size include 111, 113, 115. Common speed ratings include H, T, V, W, Y. Always match or exceed your vehicle manufacturer's original specification.

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