Как да изчислим Tire Size Compare
Какво е Tire Size Compare?
Compares tire specifications and impact on speedometer accuracy, handling, and fuel economy. Validates tire compatibility.
Формула
Speedometer error = circumference change %
Ръководство стъпка по стъпка
- 1Tire size: width, aspect ratio, wheel diameter (e.g., 225/50R17)
- 2Compare rolling circumference changes
- 3Speedometer error = circumference change %
- 4Check load and speed ratings match vehicle
Worked Examples
Вход
P215/60 vs P225/55
Резултат
Diameter +0.8%
Common Mistakes to Avoid
- ✕Not checking load rating change
- ✕Installing all-season when winter required (safety issue)
Frequently Asked Questions
Can I use different tire sizes?
Minor differences (±3%) acceptable; larger changes affect speedometer, odometer, handling.
What happens with larger/smaller tires?
Larger: slower acceleration, improved efficiency but less response; smaller: opposite.
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