MMX M14 x 1.25 tapered seat wheel bolt for BMW in 38mm and 41mm lengths
MMX M14 x 1.25 tapered seat wheel bolt for BMW in 38mm and 41mm lengths
MMX M14 x 1.25 tapered seat wheel bolt for BMW in 38mm and 41mm lengths
MMX M14 x 1.25 tapered seat wheel bolt for BMW in 38mm and 41mm lengths
100% genuine branded part
Fitment support on request
Fast UK dispatch
Buy now, pay later
Secure checkout
Easy returns
Expert BMW support

MMX

MMX BMW Individual Tapered Seat Wheel Bolt M14 x 1.25 (38mm & 41mm)

Sale price£2.40GBP
SKU: MMR37-1500-38MM

BACKORDER - AVAILABLE

Bolt length:

Bolt length

REQUEST PRICE MATCH
Pay later with 0% interest at checkout.

The MMX Individual Tapered Seat Wheel Bolt is a single M14 x 1.25 bolt with a 60° tapered seat, available in 38mm and 41mm shank lengths. It is sold individually, which makes it the straightforward answer to a lost bolt, a stripped thread, or a spacer installation that needs one or two extra fixings to make up a set.


Choosing The Right Length

Bolt length is dictated by wheel and spacer thickness rather than by model. As a rule of thumb, a bolt should engage the hub by at least the diameter of its own thread. The 38mm bolt suits most aftermarket wheels fitted without a spacer, while the 41mm length covers thicker wheel faces and thin spacers. Where a thicker spacer is fitted, MMX supplies longer bolts within its spacer kits.


Correct Seat Profile Matters

A tapered, or conical, seat bolt must be matched to a wheel with a tapered bolt seat. Fitting a tapered bolt into a ball seat wheel, or the reverse, leaves the wheel located on a fraction of its intended contact area and can allow it to work loose. The seat profile of the existing bolts should always be checked before ordering.


Key Features

  • M14 x 1.25 thread – the common BMW fitment
  • 60° tapered (conical) seat
  • Choice of 38mm or 41mm shank length
  • Sold individually as a spare or to complete a set
  • Correctly torqued to 120Nm on installation

Specifications

  • Part Numbers: MMR37-1500-38MM (38mm), MMR37-1500-41MM (41mm)
  • Thread: M14 x 1.25
  • Seat: Tapered / conical
  • Sold As: Single bolt

Compatibility

  • BMW models using M14 x 1.25 tapered seat wheel bolts
  • Suitable as a replacement or supplementary bolt for MMX wheel spacer kits

Frequently Asked Questions

How many bolts are needed per wheel?
Five on the majority of BMW applications. This listing is for a single bolt, so a full wheel needs five and a full car twenty.

Is this a ball seat bolt?
No. This is a tapered, 60 degree conical seat bolt. The seat profile of the wheel must match.


Why Buy Individual Bolts?

Losing one bolt should not mean buying twenty. MMX supplies these individually so a set can be topped up or repaired exactly as needed. R44 Performance stocks the full MMX wheel fixing range including spacers, stud conversions and locking nuts.

PLEASE NOTE

  • Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
  • Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
  • Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.