Comparison
235/60 R18 vs 235/65 R16
235/65 R16 drops the rim from 18 to 16 inches versus 235/60 R18, trading wheel size for taller sidewall. This sizing approach noticeably changes overall diameter compared to OEM. More sidewall typically improves comfort and curb protection, especially on city streets.
Indicated speed will drift far enough that recalibration is worth considering. Diameter delta falls in the cautious 3–5% range, where speedometer recalibration and a careful clearance check are worth doing.
TakeTypical choice for a dedicated winter or off-road setup where extra sidewall pays off.
Quick math: 235/65 R16 is 27.3 mm shorter than 235/60 R18, shifting the speedometer by -3.69%.
Current Tire
New Tire
Ground line · scaled comparison
Slight Difference
Within ±5% — usable, recalibration recommended
Diameter change
-27.3 mm
-3.69%
Speedometer at 100
96.3 km/h
-3.69% error
Ground clearance
-13.7 mm
ride height delta
Sidewall change
+11.8 mm
revs/km: 447.1
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/compare/235-60-r18-vs-235-65-r16Detailed comparison
| Metric | 235/60 R18 | 235/65 R16 | Difference |
|---|---|---|---|
| Overall diameter | 739.2 mm | 711.9 mm | -27.3 mm (-3.69%) |
| Sidewall height | 141.0 mm | 152.8 mm | +11.8 mm |
| Circumference | 2.322 m | 2.236 m | -85.8 mm |
| Revs / km | 430.6 | 447.1 | +16.5 |
| Ground clearance | reference | -13.7 mm | -13.7 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 96.3 km/h | -3.69 km/h |
Verdict: warning
Between 3% and 5% — noticeable speedometer drift; recalibration may be advisable.
Speedometer impact
At a true 100 km/h, your dashboard will read 96.3 km/h after switching to 235/65 R16 — a -3.69% 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 -13.7 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.
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235/60 R18
Back to
235/65 R16
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