Comparison
175/70 R13 vs 195/55 R15
195/55 R15 is a plus-2 alternative to 175/70 R13 — the bigger wheel shows through a thinner sidewall. This alternative fitment swings rolling diameter far enough to feel on the road. Less sidewall flex usually translates to crisper turn-in and a slightly stiffer ride over rough pavement.
The speedometer error is noticeable and may warrant a recalibration if you rely on indicated speed. Diameter delta falls in the cautious 3–5% range, where speedometer recalibration and a careful clearance check are worth doing.
TakeA solid pick for drivers chasing a more aggressive stance without abandoning OEM rolling diameter.
Quick math: 195/55 R15 is 20.3 mm taller than 175/70 R13, shifting the speedometer by +3.53%.
Current Tire
New Tire
Ground line · scaled comparison
Slight Difference
Within ±5% — usable, recalibration recommended
Diameter change
+20.3 mm
3.53%
Speedometer at 100
103.5 km/h
+3.53% error
Ground clearance
+10.1 mm
ride height delta
Sidewall change
-15.3 mm
revs/km: 534.5
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/compare/175-70-r13-vs-195-55-r15Detailed comparison
| Metric | 175/70 R13 | 195/55 R15 | Difference |
|---|---|---|---|
| Overall diameter | 575.2 mm | 595.5 mm | +20.3 mm (+3.53%) |
| Sidewall height | 122.5 mm | 107.3 mm | -15.3 mm |
| Circumference | 1.807 m | 1.871 m | +63.8 mm |
| Revs / km | 553.4 | 534.5 | -18.9 |
| Ground clearance | reference | +10.1 mm | +10.1 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 103.5 km/h | +3.53 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 103.5 km/h after switching to 195/55 R15 — a +3.53% 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 +10.1 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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175/70 R13
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195/55 R15
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