Comparing a Honda’s weight against a Yamaha’s in Vietnam hides a small trap: the two companies quote different weights. Yamaha’s pages publish wet weights for the Sirius RC (100 kg) and Exciter 155 VVA (123 kg); Honda publishes kerb weights across its range (retrieved 23 September 2026). This guide explains the difference so comparisons stay honest.
The three weights
Dry weight: the bike as built, no fluids - fuel, oil, coolant, battery acid all excluded. Wet weight: everything filled, tank topped, ready to ride. Kerb weight: the manufacturer’s as-sold-ready figure, typically fluids included but sometimes with a partial-tank convention that varies by maker. The gaps between them are not trivial: a 4.2-litre Sirius tank alone holds about 3 kg of petrol, and oil adds more.
Why it matters in Vietnam
Weight claims get copied across the internet without their convention, so a “98 kg Wave RSX” and a “100 kg Sirius” get compared as if identical - when one is a kerb figure and the other a wet figure. The honest statement: the two bikes are within a couple of kilograms of each other, and the convention difference is smaller than the truth most comparisons need. Our kerb-weights explainer ranks the class with conventions labelled.
What to do with the numbers
Treat any weight without its convention as suspect; treat cross-brand comparisons as approximate; trust same-brand comparisons (Honda’s own ladder runs 96-139 kg cleanly). And remember the real-world truth: fuel load, a top box and a passenger move your bike’s mass far more than spec conventions do.
Rental note
Our price-published classes (Wave and Sirius, 150,000 VND/day) both sit near the 100 kg mark by either convention - the friendly zone for new riders. Contact us to confirm current availability.