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Royal Enfield Bullet 350 Tyre Size

Mukesh Kumar

Automotive content lead, 8 years covering Indian car specs

Verified against OEM Data (2026-09-02)
Official OEM Link

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

OEM Verified Documentation

Royal Enfield Bullet 350 Technical Specifications

View Official Source Document

Complete Tyre & Wheel Specifications

SpecificationOfficial 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 ApplicationFront: 100/90-19 57P; Rear: 120/80-18 62P (Wire-Spoke Wheels with Inner Tubes)
Alternative / Other Factory Sizes3.25-19, 3.50-19
Rim Diameter (रिम का आकार)19 inch (F) / 18 inch (R)
Load IndexFront: 57 (230 kg) / Rear: 62 (265 kg)
Speed RatingP (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
Manufacturer Source:Royal Enfield Bullet 350 Technical SpecificationsOfficial PDF
Trim coverage: Front: 100/90-19 57P; Rear: 120/80-18 62P (Wire-Spoke Wheels with Inner Tubes)Inflation note: Royal Enfield manual/specification family (32 psi front, 32 psi solo rear, 36 psi pillion rear)
Open Official OEM Doc

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:

MRF

Nylogrip Zapper FS / Y

Estimated price:₹2,600–3,450
CEAT

Zoom Plus F / Gripp

Estimated price:₹2,500–3,300
Ralco

Speed Blaster

Estimated price:₹2,400–3,150

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Frequently Asked Questions

Does the modern J-series Bullet 350 use the same wheel size as older CI Bullets?
No — older Cast Iron and early UCE Bullets used 19-inch wheels front and rear (typically 3.25-19 or 3.50-19). The new J-platform Bullet 350 uses a 19-inch front wheel (100/90-19) paired with a wider 18-inch rear wheel (120/80-18).
Can I run tubeless tyres on a standard spoke-wheel Bullet 350?
You can fit a tubeless-type tyre onto a wire-spoked rim, but you MUST insert an inner tube inside it. Air will immediately leak through the spoke nipples unless an inner tube or specialized aftermarket spoke-sealing system is installed.
रॉयल एनफील्ड बुलेट 350 में हवा (टायर प्रेशर) कितनी होनी चाहिए? (Royal Enfield Bullet tyre pressure)
Royal Enfield recommends 32 psi for the front tyre (आगे का टायर) and 32 psi for the rear tyre (पीछे का टायर) for solo riding. When riding with a pillion or heavy luggage (दो सवारी या भारी सामान), increase rear tyre pressure to 36 psi.
Which tyres last longest on rural roads for a Bullet 350?
MRF Nylogrip and CEAT Gripp are renowned for exceptional longevity and stone-cut resistance, routinely lasting 35,000 to 45,000 km even on coarse rural gravel.