Comparison
235/65 R17 vs 245/70 R16
Going from 235/65 R17 to 245/70 R16 is a minus-1 setup that adds sidewall on a smaller 16-inch wheel. This wheel and tire pairing shifts overall diameter slightly from OEM. The speedometer offset is small but measurable; worth keeping in mind if you watch the dash closely. 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.
TakeTypical choice for a dedicated winter or off-road setup where extra sidewall pays off.
Quick math: 245/70 R16 is 12.1 mm taller than 235/65 R17, shifting the speedometer by +1.64%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
+12.1 mm
1.64%
Speedometer at 100
101.6 km/h
+1.64% error
Ground clearance
+6.1 mm
ride height delta
Sidewall change
+18.8 mm
revs/km: 424.8
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/compare/235-65-r17-vs-245-70-r16Detailed comparison
| Metric | 235/65 R17 | 245/70 R16 | Difference |
|---|---|---|---|
| Overall diameter | 737.3 mm | 749.4 mm | +12.1 mm (+1.64%) |
| Sidewall height | 152.8 mm | 171.5 mm | +18.8 mm |
| Circumference | 2.316 m | 2.354 m | +38.0 mm |
| Revs / km | 431.7 | 424.8 | -7.0 |
| Ground clearance | reference | +6.1 mm | +6.1 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 101.6 km/h | +1.64 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 101.6 km/h after switching to 245/70 R16 — a +1.64% 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 +6.1 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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235/65 R17
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245/70 R16
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