Hero Passion Pro Tyre Size, Front and Back

Passion Pro tyre size front and back by version

On recent bikes, then, the Passion Pro back tyre size is a twin of the front. Earlier machines used the broader 3.00-18 behind. A few tyre shop catalogues still list the old pair against the newer bike, so trust the sidewall over the catalogue.

How the two sizing styles differ

80/100-18 is written in metric. Width is 80 mm; the 100 means wall height equals the width, so about 80 mm; while 18 gives rim diameter.

2.75-18 and 3.00-18 follow the older inch system, where the first figure is roughly the width in inches. That makes 2.75 close to 70 mm and 3.00 close to 76 mm, each with a wall height near its width.

So an 80/100-18 is slightly broader than a 3.00-18. Some owners of earlier bikes fit one at the rear for extra footprint, but rim width and chain clearance decide whether it works. Get the fitter to check before buying.

Passion Plus tyre size and back tyre

Passion Plus tyre size is 80/100-18 on both wheels too, tubeless on 18 inch alloys, so the Passion Plus back tyre size equals the last Passion Pro's. Owners of either can carry one size in mind for both rims, and even a small town dealer is likely to stock it.

Diameter check before fitting a fatter rear

A common wish is 90/90-18 behind for a beefier look. The factory 80/100-18 stacks up as 457 plus 80 plus 80, close to 617 mm tall. A 90/90-18 has 81 mm walls, giving about 619 mm. Height hardly moves, so the speedometer stays accurate.

Width is where trouble starts. Those extra 10 mm may graze the chain cover or swingarm, and too wide a tyre on this slim rim bulges into the wrong profile. If the fitter confirms enough gap, it can be done, though the gain on a 110 cc class commuter is small. Inform your insurer of any change in size.

When a Passion Pro tyre is finished

Little raised bumps hide in the tread channels. When the surface has worn level with them, replacement is due. Cracked walls, a flattened strip down the centre or a squared profile also say the tyre has had its day. Bikes on daily delivery duty or long village runs chew through rear rubber much quicker than front.

A four digit date stamp sits on the sidewall as well; tyre manufacturing date explains how to read it.

Tube type or tubeless on older bikes

The final Passion Pro uses tubeless tyres on its alloys. Some earlier machines with spoked rims require a tube, since air escapes through the spoke nipples. Spoked rims leak through their nipple holes, so a tubeless cover alone stays flat there. If your bike has alloys but still carries a tube, a repairer can tell whether the rim is tubeless ready; the tubeless tyre page covers the difference.

Pressure and similar bikes

Keeping the right air is what makes these tyres last; values are on Passion Pro tyre pressure. Other commuters worth comparing are on Splendor tyre size and SP 125 tyre size, and the complete list lives on bike tyre size.