Adventure motorcycle · 2018–2023
BMW F 850 GS Tyre Sizes & Prices
The BMW F 850 GS (2018–2023) uses a 90/90-21 front and a 150/70-17 rear tyre. In stock today: fronts from R690 and rears from R2 300, per tyre before fitting, across 7 South African shops. A matching front and rear of the same tyre starts at R3 920.
Prices last checked 23 October 2026 · Sizes checked against at least two sources
BMW F 850 GS tyre sizes by year and variant
Factory front and rear sizes, checked against at least two sources each.
What tyres cost for a BMW F 850 GS
Cheapest current price per tyre in each size, by price band. Fitting is extra unless stated. A dash means no tyre in that band is in stock, or a better band costs the same or less.
Cheapest matching pair for the F 850 GS
The same tyre model front and rear, which is what most riders fit. The front and rear can come from different shops.
- Front 90/90-21: R1 550 at Sharwoods Bike Tyre
- Rear 150/70-17: R2 370 at Sharwoods Bike Tyre
About the BMW F 850 GS's tyres
BMW's mid-size parallel-twin adventure bike, sold from 2018 to 2023, uses a 90/90-21 front and a 150/70-17 rear on spoked wheels. The F 850 GS Adventure uses the same sizes. The smaller F 750 GS has a 19-inch front wheel, so check which model you own.
Before you order, check the size on your current tyres or in the owner's manual, and match the load index and speed rating. For typical prices by size and tips on paying less, read our motorcycle tyre price guide.
BMW F 850 GS tyre FAQs
What tyre size does a BMW F 850 GS use?+
The BMW F 850 GS uses 90/90-21 at the front and 150/70-17 at the rear. Check the size on your current tyres or in the owner's manual before you order.
How much do tyres for a BMW F 850 GS cost?+
90/90-21 fronts start at R690 and 150/70-17 rears start at R2 300, per tyre in stock today. The cheapest front and rear together cost R2 990. The cheapest matching pair of one tyre model is the Bridgestone BT46 at R3 920. Fitting is usually extra. Prices change weekly.
Can I fit a different tyre size on my BMW F 850 GS?+
Stick to the sizes the manufacturer approves for your bike and wheels. A different width or profile changes how the bike steers and leans, and can upset the ABS and traction control. Never mix radial and bias-ply tyres unless the manufacturer allows it.
Should I replace both BMW F 850 GS tyres at the same time?+
Not always. Rear tyres usually wear out before fronts, so many riders replace the rear more often. If you replace only one, fit the same tyre model as the other end so the pair is designed to work together.