Pirelli 90/90R21 Motorcycle tyres
Compare 3 Pirelli motorcycle tyres in 90/90R21 (also written 90/90 R21 or 90 90 21), with prices including GST. Choose delivery to your address, or have them sent to a Tyroola fitting partner near you to be fitted and balanced.
What 90/90R21 means
A 90/90R21 tyre is 90 mm wide across the tread. The sidewall is 90% of that width, about 81 mm tall, and it fits a 21-inch rim. That puts the overall diameter at roughly 695 mm, or about 458 wheel revolutions per kilometre. The R stands for radial construction.
Load index and speed rating
Tyres listed in 90/90R21 carry load indexes from 54 (? kg per tyre) to 54 (? kg per tyre) and speed ratings S (180 km/h), H (210 km/h) and V (240 km/h). Your vehicle's tyre placard, usually inside the driver's door frame, sets the minimum load index and speed rating. Replacements must match or exceed both.
Frequently asked questions
What does 90/90R21 mean?
It means a tyre 90 mm wide with a sidewall 90% of that width (about 81 mm), radial construction, for a 21-inch rim. The load index and speed rating follow the size on the sidewall, for example 90/90R21 91V.
Which load index and speed rating do I need for 90/90R21?
Use the load index and speed rating on your vehicle's tyre placard as the minimum. A higher load index or speed rating is fine; a lower one is not. If your placard lists more than one size, use the ratings shown for the size you are buying.
Can I get 90/90R21 tyres fitted near me?
Yes. At checkout, choose a Tyroola fitting partner near you and the tyres are delivered there for fitting and balancing. You can also have them delivered to your own address.