What size wheels fit a BMW Z4 III (G29)?

Roughly 8.5J–9J (ET25–ET36); staggered setups run 10J–10.5J rear.

How many BMW Z4 are there on UK roads?

Approximately 32,081 BMW Z4 are licensed in the UK, according to DfT VEH0124 vehicle-parc data (2025).

BMW Z4 III (G29) — Wheel Fitment & Specs

By Torque, AIWheelTech vehicle & fitment specialist · 2018–2026

TL;DR — The BMW Z4 III (G29) (2018–2026) uses a 5x112 bolt pattern, 66.6 mm centre bore, M14 x 1.25 bolts torqued to ~140 Nm. It accepts ~8.5J–9J wheels at ET25–ET36 front; staggered setups run 10J–10.5J rear (ET37–ET45).

Overview

The BMW Z4 (G29) is a roadster produced by German automobile manufacturer BMW. It was introduced in 2018 for the 2019 model year as a successor to the E89 Z4, marking the return of the soft-top roof to the Z Series sports cars. The G29 Z4 is based on the Toyota-BMW joint sports car architecture and features a front-engine, rear-wheel-drive layout with weight savings compared to its predecessor. It was assembled in Austria by Magna Steyr.

Wheel fitment

Bolt pattern (PCD)	5x112
Centre bore	66.6 mm
Bolt / thread	M14 x 1.25 (bolts)
Wheel-bolt torque	140 Nm
Seat type	tapered
Factory setup	staggered
TPMS	direct

Aftermarket wheel sizes — read per position:

Position	Width	Offset
Front	8.5J–9J	ET25–ET36
Rear (staggered)	10J–10.5J	ET37–ET45

As a rule, each extra 1J of width wants roughly +8–10 ET to keep the wheel tucked. The exact offset and any spacer are confirmed by the fit-check.

Browse wheels that fit a BMW Z4 →Get them fitted (UK)

UK popularity & demand

~32,081 BMW Z4 licensed on UK roads — top 8% of models by volume.

Based on DfT VEH0124 vehicle-parc data (2025), there are approximately 32,081 BMW Z4 on UK roads, placing it in the top 8% of car models by volume across our fitment database. That makes its wheel fitment a high-demand size to keep in stock — one reason we track its exact spec here.

Source: DfT/DVLA licensed-vehicle statistics (VEH0124), matched to the AIWheelTech fitment database.

Engines & drivetrain

Variant	Engine	Fuel	Power	Drive
M40i (2020 onwards)	3.0 L B58B30 turbocharged I6	petrol	379 hp	RWD
M40i (pre-2020)	3.0 L B58B30 turbocharged I6	petrol	335 hp	RWD
sDrive30i	2.0 L B48B20 turbocharged I4	petrol	254 hp	RWD
sDrive20i	2.0 L B48B20 turbocharged I4	petrol	193 hp	RWD

Performance

Variant	Power	0–62 mph	Top speed
sDrive20i	193 hp	6.6 s	145 mph
sDrive30i	254 hp	5.4 s	155 mph
M40i (pre-2020)	335 hp	4.2 s	155 mph
M40i (2020 onwards)	379 hp	4.2 s	155 mph

Dimensions

Length	4324 mm
Width	1864 mm
Height	1304 mm
Wheelbase	2470 mm
Kerb weight	1405 kg

Body styles & production

Body styles	Roadster
Produced	2018–2026

Trim levels

sDrive 20isDrive 30iM40i

Factory colours

Alpinweiss IIIBlack Sapphire MetallicJet BlackMineral White PearlPortimao Blue MetallicSan Francisco Red MetallicFrozen Gray II Metallic MatteSan Remo Green MetallicSkyscraper Grau MetallicSparkling Copper Gray PearlThundernight MetallicFrozen Deep Green II Metallic

History & notable variants

The G29 Z4 was introduced at the Pebble Beach Concours d’Elegance on August 23, 2018. Designed by Calvin Luk, it was developed alongside the fifth-generation Toyota Supra due to BMW's partnership with Toyota. The car was officially launched at the 2018 Paris Motor Show and became available for sale in March 2019. In September 2022, a facelift (LCI) model was introduced, standardizing the M Sport appearance package across all variants.

Reliability & owner notes

Pros: 50:50 weight distribution; larger boot capacity compared to predecessor; multi-link rear suspension
Cons: Limited availability of manual transmission option