Browse our comprehensive directory of tire size compatibility charts. Each page shows compatible alternatives within 3% of the original tire diameter, including speed differences and diameter calculations.
Don't see your tire size? Use our interactive tire size calculator for any tire size.
16" Wheel Diameter
17" Wheel Diameter
215/45R17
62.5cm diameter
53 alternatives
225/45R17
63.4cm diameter
51 alternatives
225/50R17
65.7cm diameter
51 alternatives
235/40R17
62cm diameter
48 alternatives
245/40R17
62.8cm diameter
48 alternatives
245/45R17
65.2cm diameter
49 alternatives
255/40R17
63.6cm diameter
47 alternatives
265/35R17
61.7cm diameter
45 alternatives
275/35R17
62.4cm diameter
42 alternatives
18" Wheel Diameter
215/40R18
62.9cm diameter
51 alternatives
225/40R18
63.7cm diameter
48 alternatives
225/45R18
66cm diameter
55 alternatives
235/45R18
66.9cm diameter
50 alternatives
235/40R18
64.5cm diameter
48 alternatives
245/40R18
65.3cm diameter
50 alternatives
245/35R18
62.9cm diameter
48 alternatives
255/35R18
63.6cm diameter
46 alternatives
255/40R18
66.1cm diameter
48 alternatives
265/35R18
64.3cm diameter
46 alternatives
265/40R18
66.9cm diameter
48 alternatives
275/30R18
62.2cm diameter
42 alternatives
275/35R18
65cm diameter
42 alternatives
285/35R18
65.7cm diameter
43 alternatives
19" Wheel Diameter
235/40R19
67.1cm diameter
50 alternatives
235/35R19
64.7cm diameter
51 alternatives
245/35R19
65.4cm diameter
50 alternatives
255/35R19
66.1cm diameter
48 alternatives
265/35R19
66.8cm diameter
46 alternatives
265/30R19
64.2cm diameter
42 alternatives
275/30R19
64.8cm diameter
44 alternatives
275/35R19
67.5cm diameter
45 alternatives
285/30R19
65.4cm diameter
44 alternatives
About Tire Size Compatibility
When replacing tires, maintaining the original overall diameter is crucial for:
- Speedometer accuracy: Ensures readings remain correct
- Vehicle dynamics: Preserves handling and stability characteristics
- Clearance: Prevents interference with wheel wells and suspension
- Performance: Maintains manufacturer-intended performance characteristics
Our compatibility charts show alternatives within ±3% of the original diameter, which is the generally accepted tolerance for tire size changes.
Need a Custom Calculation?
Use our interactive tire size calculator to find compatibility for any tire size, not just the ones in our directory.