Royal Enfield Bullet 350 Tyre Size
Mukesh Kumar
Automotive content lead, 8 years covering Indian car specs
Factory OEM Tyre Size / मूल टायर साइज
100/90-19 57P (F) / 120/80-18 62P (R)
Front (आगे): 100/90-19 57P · Rear (पीछे): 120/80-18 62P
Royal Enfield Bullet 350 Technical Specifications
View Official Source DocumentComplete Tyre & Wheel Specifications
| Specification | Official Manufacturer Specification |
|---|---|
| Factory OEM Tyre Sizes | 100/90-19(57P) 120/80-18(62P) |
| Front Tyre Specification (आगे का टायर) | 100/90-19 57P |
| Rear Tyre Specification (पीछे का टायर) | 120/80-18 62P |
| Trim / Variant Application | Front: 100/90-19 57P; Rear: 120/80-18 62P (Wire-Spoke Wheels with Inner Tubes) |
| Alternative / Other Factory Sizes | 3.25-19, 3.50-19 |
| Rim Diameter (रिम का आकार) | 19 inch (F) / 18 inch (R) |
| Load Index | Front: 57 (230 kg) / Rear: 62 (265 kg) |
| Speed Rating | P (150 km/h) |
| Tyre Pressure / हवा का दबाव (Standard) | Front (आगे): 32 psi · Rear (पीछे): 32 psi |
| Tyre Pressure / हवा का दबाव (Fully Laden / Pillion) | Front (आगे): 32 psi · Rear (पीछे): 36 psi |
What This Size Means
100 = tread width in millimetres. 90 = aspect ratio, meaning the sidewall height is 90% of the tread width (90 mm). R = radial construction (or bias-ply if dash-indicated). 19 = wheel rim diameter in inches (483 mm).
Editor's Technical Insight
The Royal Enfield Bullet 350 holds the distinction of being the longest continually produced motorcycle in human history. With the modern transition to Royal Enfield's J-platform engine and chassis, the Bullet 350 abandoned the vintage 19-inch rear wheel setup in favor of a modern 100/90-19 front and 120/80-18 rear tyre combination. Because the Bullet proudly retains heritage wire-spoked rims across its base and mid trims (Military and Standard variants), all models feature tube-type tyres from the factory. The wire-spoked wheels offer natural structural deflection over severe rural ruts and broken boulder roads in Punjab, Haryana, and Rajasthan, protecting the wheel hubs from brittle fracture. For touring owners, the tube-type setup requires carrying spare heavy-duty rubber inner tubes (preferably 3.25/3.50-19 front and 120/80-18 rear) and tyre irons when exploring remote regions, since roadside plug-strip repairs are not an option. Maintaining 32 psi at the front and 32 psi at the rear (bumping to 36 psi with a pillion) ensures crisp turn-in and minimizes tyre rolling drag.
Tyre Options Available in India
Verified replacement options compatible with Royal Enfield Bullet 350 stock wheel rims:
Nylogrip Zapper FS / Y
Zoom Plus F / Gripp
Speed Blaster
Try It: Compare Upgrade Sizes
Calculate rolling diameter deviation, ground clearance difference, and speedometer error before upsizing.