About 165/45R21 Tires

The 165/45R21 is a relatively uncommon and specialized tire size that is primarily found on certain electric vehicles and concept cars designed with narrow, tall tires for improved aerodynamic efficiency and reduced rolling resistance. Some European compact and subcompact vehicles engineered for maximum fuel economy may also utilize this unusual size. Due to its niche fitment, availability is limited compared to mainstream tire sizes.

At the budget end, options are extremely limited given the niche nature of this size, but occasionally off-brand European manufacturers may offer affordable fitments worth considering. Mid-range shoppers should look at Continental or Hankook, both of which have produced tires in unconventional EV-focused sizes with solid performance credentials. For premium buyers, Michelin is the top recommendation, as they have been a leader in developing low rolling resistance tires in specialized narrow profiles suited to efficiency-focused vehicles.

Treddur is currently tracking 6 listings for 165/45R21 tires. Prices range from $127.93 to $487.99 depending on brand and retailer.

Because this is a low-volume specialty tire size, it is advisable to purchase whenever you find stock available rather than waiting for seasonal sales, as inventory can be unpredictable. Ordering in advance of winter or summer season changes is especially recommended to avoid being caught without a suitable replacement.

Due to the very limited production volume and specialized demand for the 165/45R21 size, prices tend to run higher than comparably sized conventional tires, and discounting is rare.