Comparison
195/60 R15 vs 245/40 R17
245/40 R17 is a plus-2 alternative to 195/60 R15 — the bigger wheel shows through a thinner sidewall. This wheel and tire pairing shifts overall diameter slightly from OEM. Expect a slight but noticeable shift in indicated speed compared to the original tires. Expect a more planted steering feel, at the cost of some of the cushioning a taller sidewall provides. Diameter change stays inside the conservative ±3% safety window — an OEM-safe fitment on most vehicles.
TakeA solid pick for drivers chasing a more aggressive stance without abandoning OEM rolling diameter.
Quick math: 245/40 R17 is 12.8 mm taller than 195/60 R15, shifting the speedometer by +2.08%.
Current Tire
New Tire
Ground line · scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
+12.8 mm
2.08%
Speedometer at 100
102.1 km/h
+2.08% error
Ground clearance
+6.4 mm
ride height delta
Sidewall change
-19.0 mm
revs/km: 507.0
Permalink for this comparison:
/compare/195-60-r15-vs-245-40-r17Detailed comparison
| Metric | 195/60 R15 | 245/40 R17 | Difference |
|---|---|---|---|
| Overall diameter | 615.0 mm | 627.8 mm | +12.8 mm (+2.08%) |
| Sidewall height | 117.0 mm | 98.0 mm | -19.0 mm |
| Circumference | 1.932 m | 1.972 m | +40.2 mm |
| Revs / km | 517.6 | 507.0 | -10.6 |
| Ground clearance | reference | +6.4 mm | +6.4 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 102.1 km/h | +2.08 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 102.1 km/h after switching to 245/40 R17 — a +2.08% 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 +6.4 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
195/60 R15
Back to
245/40 R17
Drivers also compare
Closely-related fitments and plus-size swaps for 195/60 R15 and 245/40 R17.
215/45 R17 vs 245/40 R17
Wider variation on the same rim — more grip, less clearance.
Δ 0.40%
225/45 R17 vs 245/40 R17
Wider variation on the same rim — more grip, less clearance.
Δ 1.02%
185/65 R15 vs 195/60 R15
Wider variation on the same rim — more grip, less clearance.
Δ 1.05%
175/65 R15 vs 195/60 R15
Wider variation on the same rim — more grip, less clearance.
Δ 1.07%
245/40 R17 vs 255/40 R17
Wider variation on the same rim — more grip, less clearance.
Δ 1.27%
205/50 R17 vs 245/40 R17
Wider variation on the same rim — more grip, less clearance.
Δ 1.41%
205/45 R17 vs 245/40 R17
Wider variation on the same rim — more grip, less clearance.
Δ 1.87%
195/60 R15 vs 205/60 R15
Wider variation on the same rim — more grip, less clearance.
Δ 1.95%
Related topics