About 155/55R21 Tires

The 155/55R21 tire size is primarily found on compact and subcompact electric vehicles, most notably the Tesla Model 3 and certain BMW i3 variants, where narrow, tall tires help improve aerodynamic efficiency and range. This unconventional size is also used on some European economy cars and urban EVs designed for fuel efficiency, where the narrow contact patch reduces rolling resistance.

At the budget level, Sailun and Hankook offer affordable options in this size that provide adequate performance for everyday urban driving. Mid-range shoppers should consider Michelin's e-Primacy or Continental's EcoContact 6, both optimized for low rolling resistance and EV compatibility. For premium performance, Bridgestone's Ecopia and Pirelli's Cinturato series deliver excellent handling, longevity, and energy efficiency tailored specifically to electric vehicle demands.

Treddur is currently tracking 12 listings for 155/55R21 tires. Prices range from $57.07 to $84.06 depending on brand and retailer.

Because this size is predominantly used on electric vehicles, demand tends to spike in spring and fall as EV owners rotate or replace tires before extreme weather seasons, so purchasing in mid-winter or midsummer can yield better availability and pricing. Buying ahead of winter is especially recommended, as all-season and winter options in this niche size can sell out quickly in colder climates.

Due to the niche nature of this tire size and its strong association with electric vehicles, prices tend to run higher than similarly dimensioned conventional sizes, typically ranging from $90 to $200 per tire depending on brand and performance rating.