When upgrading or replacing your BMW wheel center caps, knowing the correct size is crucial. The wrong size might not fit properly, fall off, or even damage the wheel hub. This guide explains how to find the right wheel center cap size for your BMW model and offers tips for a secure fit.
Why Wheel Center Cap Size Matters for BMWs
Wheel center caps not only complete the aesthetic of your car but also protect the hub area from dust and corrosion. For BMWs, precision matters — many models have specific cap sizes that match OEM (original equipment manufacturer) specs. Choosing the correct cap ensures a snug fit, aligned logo, and better durability.
How to Measure BMW Wheel Center Cap Size
If you’re unsure about your cap size, follow these steps to measure it correctly:
- Remove your existing center cap if one is installed.
- Measure the outer diameter of the cap in millimeters (mm).
- Check the clip diameter or the inner locking diameter, especially for OEM-style caps.
- Use a digital caliper or measuring tape for accurate results.
Most BMW center caps range between 56mm to 72mm, with 68mm being the most common.
see also check : How to Measure Wheel Center Cap Size
BMW Wheel Center Cap Size Chart by Model
| BMW Model | Common Cap Size | Notes |
|---|---|---|
| 3 Series (E90, F30) | 68mm | Most standard BMW cap size |
| 5 Series (F10, G30) | 68mm | Same size for front & rear |
| 7 Series | 68mm or 70mm | Depends on trim and wheels |
| X3 / X5 / X6 | 70mm or 72mm | SUVs tend to use larger caps |
| M Series (M3, M5, etc.) | Varies | Performance wheels differ |
| Older Models (E36, E46) | 56mm to 60mm | May vary by production year |
✅ Tip: Always measure the actual cap or hub bore instead of guessing based on model.
OEM vs Aftermarket BMW Center Caps
- OEM Caps: Perfect fit, high quality, matched logos, but more expensive.
- Aftermarket Caps: Budget-friendly, wide variety of styles, but sizing must be confirmed carefully.
If you go aftermarket, always verify:
- Outer diameter (e.g., 68mm)
- Clip type and depth
- Compatibility with alloy or steel wheels
see also check : How to Install Wheel Center Caps (Step-by-Step)
Recommended Wheel Center Caps for BMW (Amazon Picks)
1. BMW OEM 68mm Center Caps (Set of 4)
- Perfect fit for most 3 & 5 Series
- Genuine logo, high-quality plastic clips
- [Buy on Amazon]
2. 70mm Center Caps for X5/X6 (Aftermarket)
- For larger SUV wheels
- Chrome or carbon look options
- [Check Price]
3. Carbon Fiber Look BMW Logo Center Caps (68mm)
- Affordable style upgrade
- Compatible with standard BMW wheels
- [Shop Now]
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FAQ – BMW Wheel Cap Sizing
Q: Will a 68mm center cap fit all BMW models?
A: No. While 68mm is most common, SUVs and older models may need 70mm, 72mm, or 56mm depending on rim size.
Q: How do I prevent center caps from falling off?
A: Ensure you’re using the correct clip size and that the cap sits flush with the hub.
Q: Can I use universal center caps?
A: Yes, if the size matches exactly, but OEM caps generally offer a more secure fit.
Conclusion
Choosing the correct size for your BMW wheel center caps helps ensure a proper fit and professional look. Most modern models use 68mm caps, but always measure your current caps or wheel hub bore for accuracy. Whether you prefer OEM precision or stylish aftermarket options, fitting the right size cap keeps your wheels protected and your BMW looking sharp.
Need a new set of BMW center caps? Check our top Amazon picks above or measure yours today and grab the perfect match!
