Rolling geometry
Tools · wheel & tyre fitment
Will it fit?
Compare a candidate wheel and tyre against an OEM 981 or 987 setup. The calculator is local and transparent: rim width, rolling diameter, speedometer drift and offset movement are shown separately so a single green result cannot hide a clearance problem.
Native geometry
Wheel / tyre checker
Guidance only — confirm the exact tyre manufacturer range and physical clearance.
Wheel geometry
Offset calculator
PSM / ABS check
Staggered diameter
Workshop reference
Torque finder
Wheel hardware
Shared references
- PCD
- 5x130
- Centre bore
- 71.6 mm
Wheel-bolt torque: 981 160 Nm (118 lb-ft); 987 130 Nm (96 lb-ft).
981 alignment
PASM, lowered ~10 mm
Unconfirmed community/dealer reference
- Front camber
- -0.5°
- Rear camber
- -1.5°
- Front toe
- 0.02° (total)
- Rear toe
- 0.13° (total)
UNCONFIRMED — for a PASM car lowered ~10 mm; standard-suspension figures differ. Confirm against the factory "4X00IN Adjustment values for suspension alignment" sheet.
987 alignment
Standard suspension
Verified against workshop manual
- Front camber
- -0.17°
- Rear camber
- -1.33°
- Front toe
- 0.08° (total)
- Rear toe
- 0.08° (per wheel)
PASM / sport chassis run more negative camber than these standard figures.
Fitment data and pure calculation modules imported from FLAT·SIX.