Comparison
225/55 R18 vs 235/60 R16
Switching from 225/55 R18 to 235/60 R16 steps down to a 16-inch wheel — a familiar move for winter and dedicated all-terrain sets. This wheel and tire pairing trims or stretches rolling diameter by a small margin. Expect a slight but noticeable shift in indicated speed compared to the original tires. Extra sidewall absorbs impacts more readily — a sensible bias for daily commuting and broken pavement. Overall the swap sits inside the safe ±3% diameter window, so ABS, traction control and gearing behave normally.
TakePractical direction for winter wheels, chains, or rougher pavement where cushioning matters.
Quick math: 235/60 R16 is 16.3 mm shorter than 225/55 R18, shifting the speedometer by -2.31%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
-16.3 mm
-2.31%
Speedometer at 100
97.7 km/h
-2.31% error
Ground clearance
-8.2 mm
ride height delta
Sidewall change
+17.3 mm
revs/km: 462.4
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/compare/225-55-r18-vs-235-60-r16Detailed comparison
| Metric | 225/55 R18 | 235/60 R16 | Difference |
|---|---|---|---|
| Overall diameter | 704.7 mm | 688.4 mm | -16.3 mm (-2.31%) |
| Sidewall height | 123.8 mm | 141.0 mm | +17.3 mm |
| Circumference | 2.214 m | 2.163 m | -51.2 mm |
| Revs / km | 451.7 | 462.4 | +10.7 |
| Ground clearance | reference | -8.2 mm | -8.2 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 97.7 km/h | -2.31 km/h |
Verdict: excellent
Within ±3% — speedometer, ABS and traction control should behave normally.
Speedometer impact
At a true 100 km/h, your dashboard will read 97.7 km/h after switching to 235/60 R16 — a -2.31% offset. Use the speedometer error calculator to recheck for other indicated speeds, and the speedometer error guide for the full background.
Ground clearance change
The new tire's half-diameter changes ride height by -8.2 mm. Small differences are absorbed by suspension travel, but anything beyond ±10 mm can affect headlight aim, fender clearance and bump-stop margin. See the plus-sizing guide before committing.
Back to
225/55 R18
Back to
235/60 R16
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