1999 Porsche Boxster Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 1999 Porsche Boxster, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x130 |
|---|---|
| Lug Nut / Bolt Size | B 14x1.50 |
| Center Bore (CB) | 71.6 mm |
| Offset (ET) | 53 |
| Torque Specs | 100 ft-lbs (135 Nm) |
1999 Boxster — Year-Specific Fitment Context
The 1999 Porsche Boxster is in year 3 of 20 using the 5x130 pattern (1997–2016). Wheels from any 1997–2016 Porsche Boxster are cross-compatible with the 1999 model.
Porsche Boxster Bolt Pattern by Year
The table below shows how the Boxster's wheel specifications have changed over the years. The 1999 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1997 | 5x130 | 71.6 | 53 |
| 1998 | 5x130 | 71.6 | 53 |
| ▸ 1999 | 5x130 | 71.6 | 53 |
| 2000 | 5x130 | 71.6 | 53 |
| 2001 | 5x130 | 71.6 | 53 |
| 2002 | 5x130 | 71.6 | 53 |
| 2003 | 5x130 | 71.6 | 53 |
| 2004 | 5x130 | 71.6 | 53 |
| 2005 | 5x130 | 71.6 | 53 |
| 2006 | 5x130 | 71.6 | 55 |
| 2007 | 5x130 | 71.6 | 55 |
| 2008 | 5x130 | 71.6 | 55 |
| 2009 | 5x130 | 71.6 | 55 |
| 2010 | 5x130 | 71.6 | 55 |
| 2011 | 5x130 | 71.6 | 55 |
| 2012 | 5x130 | 71.6 | 55 |
| 2013 | 5x130 | 71.6 | 55 |
| 2014 | 5x130 | 71.6 | 57 |
| 2015 | 5x130 | 71.6 | 57 |
| 2016 | 5x130 | 71.6 | 57 |
5x130 Pattern Context
This bolt pattern appears on 208 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 5x130:
Expert Buying Guide for 1999 Porsche Boxster
For your 1999 Porsche Boxster, the 5x130 bolt pattern is shared across 1997–2016 models, ensuring broad cross-compatibility. However, the 71.6mm center bore is critical: aftermarket wheels with a larger bore require hub-centric rings to prevent vibration and ensure proper load transfer. The stock offset is 53mm; deviations beyond ±5mm may cause rubbing or clearance issues. Always verify that aftermarket wheels use a 14x1.50 lug nut with the correct seat (ball seat for Porsche). Using incorrect lug nuts can lead to wheel loosening. For safety, re-torque lug nuts after 50 miles of driving.
Historical Fitment Data Reference
In our dataset, Porsche Boxster appears from 1997 to 2016 (20 model years). Across recorded model years, this model generally keeps the same bolt pattern.
- Observed bolt-pattern variants for this model: 1
- Observed center-bore variants for this model: 1
- Observed lug-size variants for this model: 1
- Observed total offset span across years: 4.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 96 ft-lb after 50 miles of driving.
- ✅ Avoid using conical seat lug nuts; Porsche requires ball seat (radius) lug nuts.
- ✅ Check inner clearance for offset changes: 53mm is optimal; lower offset may rub fenders.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
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1999 Porsche Boxster — Frequently Asked Questions
What is the bolt pattern for a 1999 Porsche Boxster?
The 1999 Porsche Boxster uses a 5x130 bolt pattern (also called lug pattern or PCD). The center bore is 71.6mm and the offset is 53mm.
What other years of Porsche Boxster have the same bolt pattern as the 1999?
The Porsche Boxster uses the 5x130 pattern from 1997 through 2016. Wheels from any of these model years are dimensionally compatible with the 1999, provided the offset and center bore also match.
Do 1999 Porsche Boxsters use lug bolts or lug nuts?
The 1999 Boxster requires B 14x1.50 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
Will wheels from another Porsche fit my 1999 Boxster?
Only if they share the exact same 5x130 bolt pattern, a compatible offset, and a center bore equal to or larger than 71.6mm.
Why is matching the 71.6mm center bore important for the 1999 Boxster?
The 71.6mm center bore ensures the wheel is perfectly centered on the hub. If the wheel is lug-centric instead of hub-centric, you may experience steering wheel vibration at highway speeds.
What is the center bore of a 1999 Porsche Boxster?
The factory center bore (hub bore) for the 1999 Porsche Boxster is 71.6mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
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