BMW Z4 I (E85)

BMW Z4 I (E85) — Wheel Fitment & Specs

By Torque, AIWheelTech vehicle & fitment specialist · 2002–2008
TL;DR — The BMW Z4 I (E85) (2002–2008) uses a 5x120 bolt pattern, 72.6 mm centre bore, M12 x 1.5 bolts torqued to ~115 Nm. It accepts ~7J–8.5J wheels at ET33–ET45 front; staggered setups run 8.5J–9.5J rear (ET34–ET45).

Overview

The first generation of the BMW Z4, designated as E85 for the roadster and E86 for the coupe, was produced from July 2002 to December 2008. It succeeded the BMW Z3 and is part of the BMW Z Series lineup. The initial models were in the roadster body style with a straight-six engine option, while the coupé variant was introduced later in 2006. Both versions were manufactured at the Plant Spartanburg in Greer, South Carolina. This generation saw significant changes from its predecessor, including an increase in size and stiffer chassis design.

Wheel fitment

Bolt pattern (PCD)5x120
Centre bore72.6 mm
Bolt / threadM12 x 1.5 (bolts)
Wheel-bolt torque115 Nm
Seat typetapered
Factory setupstaggered
TPMSdirect

Aftermarket wheel sizes — read per position:

PositionWidthOffset
Front7J–8.5JET33–ET45
Rear (staggered)8.5J–9.5JET34–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

VariantEngineFuelPowerDrive
M Roadster3.2L S54B32 inline-sixpetrol338 hpRWD
M Coupé3.2L S54B32 inline-sixpetrol338 hpRWD
3.0si Roadster3.0L N52B30 inline-sixpetrol261 hpRWD
3.0si Coupé3.0L N52B30 inline-sixpetrol261 hpRWD
3.0i (early)3.0L M54B30 inline-sixpetrol228 hpRWD
2.5si2.5L N52B25 inline-sixpetrol214 hpRWD
3.0i (late)3.0L N52B30 inline-sixpetrol214 hpRWD
2.5i (early)2.5L M54B25 inline-sixpetrol185 hpRWD
2.5i (late)2.5L N52B25 inline-sixpetrol174 hpRWD
2.2i2.2L M54B22 inline-sixpetrol170 hpRWD
2.0i2.0L N46B20 inline-fourpetrol150 hpRWD

Performance

VariantPower0–62 mphTop speed
2.0i150 hp8.2 s93 mph
2.2i170 hp7.7 s98 mph
2.5i (early)185 hp7 s93 mph
2.5i (late)174 hp7 s93 mph
2.5si214 hp6.5 s97 mph
3.0i (early)228 hp5.9 s137 mph
3.0i (late)214 hp6.2 s97 mph
3.0si Roadster261 hp5.6 s97 mph
3.0si Coupé261 hp5.6 s97 mph
M Roadster338 hp4.8 s150 mph
M Coupé338 hp4.8 s150 mph

Dimensions

Length4090 mm
Width1780 mm
Height1300 mm
Wheelbase2495 mm

Body styles & production

Body stylesRoadster, coupé
Produced2002–2008
Units produced197,950

Trim levels

2.0i2.2i2.5i3.0i3.0siM RoadsterM Coupé

Factory colours

Alpinweiss III SolidBright RedOlive MetallicTitanium Silver MetallicImola RedCarbonschwarz MetallicStratus Gray MetallicPhoenix MetallicNachtblau MetallicFlamenco Red MetallicSterlinggrau MetallicBlack Sapphire MetallicToledo Blue MetallicJet BlackHavanna MetallicInterlagos Blue MetallicSepang Bronze MetallicMonaco Blue MetallicDiopsidschwarz PearlDeep Green Metallic

History & notable variants

The E85 roadster was designed by Anders Warming between mid-1998 to summer 1999, while Tomasz Sycha handled the coupé variant's design. The Z4 made its debut at the Paris Motor Show in 2002 and went on sale as a 2003 model year vehicle in North America, with European sales beginning in March 2003. Notable special models included the Alpina Roadster S (2004-2006) and the Concept Coupé Mille Miglia (2006). The Z4 underwent a facelift in 2006, introducing 'si' model variants and discontinuing the 2.2i model.

Reliability & owner notes