* Your speedometer will be off. The 205 tires will have a smaller diameter than the 185 tires, so your speedometer will read higher than your actual speed. You can correct this by recalibrating your speedometer or using a GPS speedometer.
* Your car's performance may be affected. The 205 tires will provide more grip than the 185 tires, but they will also be heavier. This could affect your car's acceleration, braking, and handling.
* You may need to modify your car's suspension. The 205 tires may not fit correctly without modifying your car's suspension. You may need to purchase new springs, shocks, or control arms.
If you are considering replacing your 185 60 R15 tires with 205 tires, it is important to weigh the pros and cons carefully before making a decision.
