
The recommended tire pressure for the front wheel of uy125 is 1.8-2.5 bar, and for the rear wheel is 2.8-3.2 bar. Hazards of low tire pressure: Increased friction coefficient with the road surface, leading to higher fuel consumption; Causes heavy steering and easy deviation, which are factors detrimental to driving safety; Increases the movement of various parts of the tire, causing abnormal heating due to excessive rolling; Reduces the functionality of the cord and rubber, leading to delamination or cord breakage, and excessive friction with the rim causing damage to the bead area and abnormal wear. Hazards of high tire pressure: Accelerates localized wear of the central tread pattern, reducing tire lifespan; Increases vehicle vibration, indirectly affecting the lifespan of other components; Causes excessive stretching and deformation of the tire cord, reducing tire elasticity and increasing the load on the vehicle during driving; Decreases puncture resistance. When encountering sharp objects such as nails or glass on the road, they can easily penetrate the tire, and impacts can cause internal cracks and blowouts, leading to tire bursts.

I used to ride the UY125 for quite some time, and tire pressure is something you can't take lightly. I usually inflate the front tire to around 25 PSI and the rear tire to 29 PSI, as recommended in the standard manual. Too low pressure can easily lead to flats and increased fuel consumption, while too high pressure makes the ride uncomfortably bumpy. In winter, tire pressure naturally drops a bit, so I check it every two weeks with a small tire pressure gauge—simple and convenient. If you frequently carry passengers or heavy loads, you can increase the rear tire pressure to 30 PSI, but don’t exceed the manual's recommendations. Stable tire pressure ensures safer riding, extends tire life, and saves on maintenance costs. Overall, referring to the owner's manual is the most reliable—it clearly states those values. Develop a habit of regular checks to avoid the hassle of leaks.

Riding the UY125 for so many years, correct tire pressure is key to ensuring handling. A front tire pressure of 1.75 bar and a rear tire pressure of 2.0 bar is ideal, which is the manufacturer-recommended balance point. Too low pressure causes skidding in turns, while too high pressure makes braking less stable—I’ve experienced issues in the rain. Always measure in a cold tire state; don’t check right after riding under the sun. Regular checks prevent malfunctions, and even tire wear extends lifespan. In summer, tire pressure rises slightly due to heat, while in winter it drops—remember to adjust seasonally. Keep a digital tire pressure gauge in your bike box for easy access anytime. Safe and worry-free, riding becomes even more enjoyable.

To save money and stay safe, maintaining a tire pressure of 25 PSI for the front and 29 PSI for the rear on the UY125 is sufficient. I checked the standard values in the manual, and keeping it at this level is the most economical: reasonable fuel consumption, even tire wear, and it can last a few more months. Simply using a regular tire pressure gauge to check once a month is enough. When carrying heavy loads, increase to the upper limit of 30 PSI to avoid deformation. Moderate tire pressure ensures stable riding—don’t overlook its importance to avoid unexpected repair costs.


