Will it fit?
Stock versus your new setup: dimensions, speedo, clearance and TÜV limits – calculated live and explained.
Wheels & tyres
Tip: Ctrl+Z / Ctrl+Y or your browser's back button restore earlier inputs.
Vehicle & hub
New wheel & tyre rating
Measured clearances (optional)
TÜV check
- Bolt patternOK
Bolt pattern 5x112 matches the vehicle.
Learn more - Center bore / centeringNote
Centering ring 66.6 → 57.1 mm required.
Learn more - Rolling circumferenceOK
Deviation +0.9 % – within -2 % / +1.5 %.
Learn more - Rim width for the tyreOK
8.5 J is within the approved range 7–8.5 J.
Learn more - Load indexNote
Enter the load index of tyre and papers to check.
Learn more - Speed ratingNote
Enter the speed rating of tyre and papers to check.
Learn more - Wheel cover / fenderCheck
Wheel sits +11.9 mm further out. Measure the fender gap and enter it.
Learn more - Inner clearanceCheck
The wheel moves +3.9 mm closer to the strut. Measure the gap and enter it.
Learn more - Track wideningOK
Track changes by +8 mm (+0.5 %) per axle.
Learn more
Dimensions compared
| Value | Stock | New | Change |
|---|---|---|---|
| Tyre size | 225/45 R17 | 225/35 R19 | |
| Wheel | 7J × 17″ ET49 | 8.5J × 19″ ET45 | |
| Sidewall height | 101.3 mm | 78.8 mm | −22.5 mm |
| Overall diameter | 634.3 mm | 640.1 mm | +5.8 mm |
| Circumference (static) | 1,993 mm | 2,011 mm | +18 mm |
| Rolling circumference (approx.) | 1,943 mm | 1,961 mm | +18 mm |
| Revolutions per km | 515 | 510 | −5 |
| Effective offset | 49 mm | 45 mm | −4 mm |
| Ride height | +2.9 mm |
Speedometer error
| Speedo shows | Actual | Difference |
|---|---|---|
| 30 km/h | 30.3 km/h | +0.3 km/h |
| 50 km/h | 50.5 km/h | +0.5 km/h |
| 80 km/h | 80.7 km/h | +0.7 km/h |
| 100 km/h | 100.9 km/h | +0.9 km/h |
| 130 km/h | 131.2 km/h | +1.2 km/h |
| 160 km/h | 161.5 km/h | +1.5 km/h |
| 200 km/h | 201.8 km/h | +1.8 km/h |
Assumes the speedometer was exact on the stock size. Real speedometers read slightly high from the factory.
Wheel spacers & bolts
- Wheel spacers & bolts
- No wheel spacers in the new setup.
- Required bolt length
- M14x1.5 × 27 mm
- Minimum thread engagement
- ≥ 14 mm
- Centering
- Centering ring 66.6 → 57.1 mm required.
- Bolt seat
- The bolt seat must match the wheel. Aftermarket wheels mostly use a 60° conical seat, many OEM wheels a ball seat.
- Torque
- Typically 110–140 Nm (follow the manufacturer), re-torque after 50–100 km.
Matching parts
Searches prefilled for your setup:
TÜV limits & guidelines
These values drive the calculator. Legal limits are binding, guidelines and orientation values help you assess.
| Rolling circumference vs. stock | -2 % to +1.5 % | Guideline | VdTÜV-Merkblatt 751 |
|---|---|---|---|
| Speedometer lead | 0 to 10 % + 4 km/h, never below real speed | Legal | UN-R39 / § 57 StVZO |
| Rim width for the tyre | Approved range per ETRTO table | Guideline | ETRTO Standards Manual |
| Load index | at least the value in the papers | Legal | § 36 StVZO / COC |
| Speed rating | at least the papers' value (winter tyres: sticker) | Legal | § 36 StVZO / COC |
| Wheel cover | 30° ahead to 50° behind the wheel centre | Legal | VO (EU) 1009/2010 |
| Track widening | check closely above ±2 % | Orientation | Orientierungswert |
| Remaining fender gap | ≥ 5 mm | Orientation | Orientierungswert |
| Remaining strut gap | ≥ 5 mm | Orientation | Orientierungswert |
| Thread engagement | ≥ 1 × thread diameter | Guideline | Faustregel (≥ 1 × d) |