Replacing the rear stock tire size of your 155cc bike, specifically the MRF Revz 140/60-R17, with the MRF Zapper 120/80-R17 will have certain pros and cons. Here are some factors to consider:
Pros:
- Increased stability: The wider rear tire, with a higher aspect ratio (80 instead of 60), can offer better stability and grip while riding, particularly during cornering.
- Enhanced traction: The larger contact patch provided by the wider tire can improve traction, especially on different road surfaces and in wet conditions.
- Smoother ride: The higher aspect ratio can provide a slightly softer ride, absorbing more bumps and road irregularities.
- Improved aesthetic appeal: Some riders prefer the look of wider tires, and the change can give your bike a more muscular or aggressive appearance.
Cons:
- Altered handling characteristics: The wider tire may affect the bike's handling, making it feel slightly heavier or less agile. It could require more effort to initiate and maintain lean angles during cornering.
- Potential clearance issues: Since the new tire is wider, there is a possibility of it rubbing against the swingarm or other components if there is insufficient clearance. You should ensure that the new tire fits properly without any interference.
- Speedometer and odometer discrepancy: Changing the tire size can affect the accuracy of your bike's speedometer and odometer readings. The smaller diameter of the new tire could result in a higher displayed speed and an incorrect distance measurement.
It's worth noting that tire choice can be subjective, and different riders have different preferences. Some may prioritize improved handling, while others may value increased stability or aesthetic appeal. Consider your riding style, road conditions, and personal preferences before making any changes to your bike's tire size. Consulting with a trusted mechanic or seeking recommendations from experienced riders can also provide valuable insights specific to your bike model.