Simple Tire Size Comparison Calculator | Hurrey's Performance
Hurrey's Off Road

Tire Size Calculator

Simple 3-box entry, automatic metric vs flotation detection, cleaner tags, and direct store search links without the extra clutter.
Input
Width / Dia
Aspect / Width
Rim
If box 2 looks like an aspect ratio, it is metric. If it looks like a tire width like 12.5, it is flotation.
Width / Dia
Aspect / Width
Rim
Examples: `285 / 70 / 17` becomes metric. `35 / 12.5 / 17` becomes flotation.
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After Detected: -
Search Store
Green = near match, yellow = close option, red = out of spec. Common sizes are boosted first.
Visual Compare
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Results
Similar Sizes To After
Quick tags: Near Match Close Option Out Of Spec Common
Best match sorting uses diameter, width, and a common-size boost.
Tags Format Size Diameter Dia Delta Dia Delta % Width Delta Store
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About This Tire Size Calculator

This simple tire size comparison calculator helps compare metric and flotation tire sizes, visualize diameter, sidewall height, and width changes, and find equivalent tire sizes when changing rim diameter. Use it to compare two tire sizes or keep a similar overall diameter while switching to a different wheel size.

Common Uses

  • Compare two tire sizes before buying wheels and tires
  • Check sidewall height and overall diameter differences
  • Find equivalent tire sizes for a larger or smaller rim
  • Estimate speedometer change from tire size differences

Frequently Asked Questions

Can I compare metric and flotation tire sizes?
Yes. The calculator supports both formats and automatically detects the size type.

Can I change rim size and keep the same tire height?
Yes. Single-size rim change mode helps find close overall diameter matches for a different rim size.

Does this guarantee fitment?
No. This is a planning tool for diameter, width, and sidewall comparison. Final vehicle fitment can still depend on offset, suspension, trimming, and clearance.