Replacing the rear stock tire size of your 155cc bike (Suzuki Gixxer SF FI, as mentioned earlier) from MRF Revz 140/60-R17 to MRF Zapper 120/80-R17 will have both pros and cons. Here are some potential advantages and disadvantages to consider:
Pros:
- Increased Agility: The narrower tire width (120/80-R17) can enhance the bike's agility and maneuverability. It may provide quicker and easier handling, especially in tight turns and corners.
- Lighter Feel: The reduced tire width can contribute to a lighter feel while riding, potentially improving the bike's overall responsiveness.
- Potentially Lower Cost: If the MRF Zapper 120/80-R17 is less expensive than the stock MRF Revz 140/60-R17, it could be a more affordable option when replacing tires.
Cons:
- Reduced Stability: The narrower tire may compromise the bike's stability, particularly at high speeds or during straight-line riding. The narrower contact patch may have less traction, which could impact stability and grip.
- Decreased Cornering Confidence: The wider tire (140/60-R17) on the stock setup offers a larger contact patch, providing better grip during cornering. With the narrower tire, you may experience a slight decrease in cornering confidence.
- Altered Speedometer Accuracy: Changing the tire size can affect the speedometer's accuracy. A narrower tire circumference may result in a slightly higher indicated speed compared to your actual speed.
It's important to note that tire performance can vary based on factors such as brand, tread pattern, compound, and overall tire quality. Before making any changes to your bike's tires, it's advisable to consult with a trusted mechanic or refer to the manufacturer's recommendations to ensure compatibility and safety.
Ultimately, the decision to switch to a different tire size should consider your riding style, preferences, and the specific trade-offs you are willing to accept in terms of agility, stability, and overall performance.