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Compare 255/30R21 tire prices from 5 brands
Best 255/30R21 tires
Our top three 255/30R21 picks, ranked by our specialists on quality, price and availability. Add filters to refine the podium.
What does 255/30R21 mean on a tire?
255/30R21 is also written 255 30 R21, 255/30 R21, 255 30 21 or 2553021. 255 is the tread width in millimetres, 30 the aspect ratio (sidewall height as a percentage of the width), R stands for radial construction, and 21 the rim diameter in inches.
What is the overall diameter of a 255/30R21 tire?
A 255/30R21 tire is about 686.4 mm (27.0 in) tall, with a sidewall of 76.5 mm.
255/30R21 tire size comparison: which sizes are equivalent?
An equivalent size is a tire whose overall diameter stays within 3% of 255/30R21, so the speedometer, gearing and wheel-well clearance stay close to what the vehicle was designed for. People look for one when 255/30R21 is scarce or expensive, or when they want a different width or rim size. An equivalent size is not an automatic swap, and we do not guarantee that it fits your vehicle: check the rim width range, make sure the load index is at least the original, and allow for possible rubbing. Add your car above and rely on the “Fits on your vehicle” label shown on each product to confirm the fit.
- 255/35R20+0.01% · 20"
- 305/25R21-0.07%
- 295/30R20-0.2% · 20"
- 225/40R20+0.23% · 20"
- 305/30R20+0.67% · 20"
- 295/25R21-0.8%
Sidewall 76.5 mm, overall diameter 686.4 mm (27.0 in), circumference 2156.4 mm, 463.7 revolutions per km.
How much do 255/30R21 tires cost?
255/30R21 tires start at $210.11 at PMC Tire. We list 5 tires in this dimension.
Which vehicles use 255/30R21 tires?
It depends on the exact vehicle and trim. Add your car above to check which tires in this size fit it.
Which 255/30R21 tires should I choose in Quebec?
In Quebec, winter tires are mandatory from December 1 to March 15, and only tires with the three-peak mountain snowflake symbol qualify. Our guide explains how to choose. Read the full guide
Which brands make 255/30R21 tires?
We carry 255/30R21 tires from 5 brands, including Falken, Kinforest, Lionhart, Michelin, Nankang.