225/65R17 vs 225/60R18 Side-by-side tire size comparison with specs and compatibility
Compatibility
+0.4% diameter difference
✓ Safe Swap
This tire swap is within the safe 3% diameter threshold. It should not cause issues with speedometer accuracy, ABS, or traction control systems.
Full Specifications Comparison
| Specification | 225/65R17 | 225/60R18 | Difference |
|---|---|---|---|
| Overall Diameter | 724.3 mm (28.5") | 727.2 mm (28.6") | +2.9 mm |
| Section Width | 225 mm (8.9") | 225 mm (8.9") | 0 mm |
| Sidewall Height | 146.3 mm | 135 mm | -11.3 mm |
| Circumference | 2275.5 mm | 2284.6 mm | +9.1 mm |
| Revolutions/Mile | 707 | 704 | -3 |
| Aspect Ratio | 65% | 60% | -5% |
| Rim Diameter | 17" | 18" | +1" |
Key Impact Summary
Ground Clearance
+1.5 mm
Speedometer Error
+0.4%
Width Change
0 mm
Sidewall Change
-11.3 mm
Speedometer Correction Table
When switching from 225/65R17 to 225/60R18, your speedometer will under-read. Here is the correction at common speeds:
| Speedometer Shows | Actual Speed (mph) | Difference |
|---|---|---|
| 30 mph | 30.1 mph | +0.1 mph |
| 40 mph | 40.2 mph | +0.2 mph |
| 50 mph | 50.2 mph | +0.2 mph |
| 60 mph | 60.2 mph | +0.2 mph |
| 70 mph | 70.3 mph | +0.3 mph |
| 80 mph | 80.3 mph | +0.3 mph |
| 90 mph | 90.4 mph | +0.4 mph |
| 100 mph | 100.4 mph | +0.4 mph |
| 110 mph | 110.4 mph | +0.4 mph |
| 120 mph | 120.5 mph | +0.5 mph |
What This Swap Means
Shorter sidewall: The 11.3mm decrease in sidewall height improves steering response and cornering precision. However, ride quality becomes firmer and the wheels are more vulnerable to pothole damage. This is a common trade-off when upsizing wheels (plus-sizing).
Ground clearance: Increases by 1.5mm, providing slightly better approach angles for off-road driving and speed bump clearance.
Vehicles Using 225/65R17
2025 Audi Q3 Premium 40 TFSI quattro 2024 Audi Q3 Premium 40 TFSI quattro 2023 Audi Q3 Premium 40 TFSI quattro 2022 Audi Q3 Premium 40 TFSI quattro 2021 Audi Q3 Premium 45 TFSI quattro 2020 Audi Q3 Premium 45 TFSI quattro 2025 Buick Envision Preferred 2024 Buick Envision Preferred 2023 Buick Envision Preferred 2022 Buick Envision Preferred
Vehicles Using 225/60R18
2025 Audi Q3 Premium Plus 40 TFSI quattro 2024 Audi Q3 Premium Plus 40 TFSI quattro 2023 Audi Q3 Premium Plus 40 TFSI quattro 2022 Audi Q3 Premium Plus 40 TFSI quattro 2025 Ford Maverick Lariat/Tremor 2024 Ford Maverick Lariat/Tremor 2023 Ford Maverick Lariat/Tremor 2022 Ford Maverick Lariat 2025 Lincoln Corsair Standard 2024 Lincoln Corsair Standard
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Individual Tire Specs
Frequently Asked Questions
Yes, this swap is generally safe. The diameter difference is +0.4% (+2.9mm). This is within the safe 3% threshold and should not significantly affect your speedometer, ABS, or traction control.
Switching from 225/65R17 to 225/60R18 creates a +0.4% speedometer error. Your actual speed will be faster than displayed — at an indicated 60 mph, you'll actually be going 60.2 mph.
Switching from 225/65R17 to 225/60R18 changes ground clearance by +1.5mm. The vehicle will sit 1.5mm higher. Ground clearance change equals half the overall diameter difference.