525 - 21 Tyres

The ideal 525 - 21 vintage tyre is the 5.25 x 21 Lucas.

Bentley 3 Litre on with new 5.25 x 21 Firestone Tyres at Longstone HQ

5.25 X 21

• The vintage tyre we recommend for cars with 525 - 21 tyres is the 5.25 x 21 Lucas.
• Another popular choice is the 5.25 x 21 Firestone tyre.
• The best Offset valve innertube for European vehicles using 525 - 21 tyres is the Michelin 19/20H Offset Valve tube.
• For American cars fitted with 525 - 21 tyres (requiring Central valve innertubes) Longstone recommends the Michelin 20/21CD Offset Valve tube.
• Recommended Rim tape (for Wire Wheels) with 525 - 21 tyres: Rim Tape for Wire Wheel 18" - 21".
• The 525 - 21 vintage tyre dimension can also expressed as: 525 x 21 or 5¼ X 21.
• Currently, most tyres manufactured in the size 525 - 21 feature dual-marking as 500/525 - 21.
• The 525 - 21 tyre size was commonly fitted in the 1920s to vintage vehicles like Austin 12, Rolls Royce 20HP, Bentley 3 Litre, and 4½ Litre Bentley models, among other classic vehicles.
• 525 - 21 tyres commonly replaced earlier beaded-edge vintage tyre sizes such as 820 - 120 and 815 - 105.