2015 Mercedes-Benz SL-Class Wheel Offset

Quick specs

Wheel size: Multiple — see configurations
Offset: ET36 · ET35 · ET27 · ET30
Backspacing: Multiple — see configurations
Bolt pattern: 5x112
Center bore: 66.6 mm
Thread: M14 x 1.5
Tire size: Multiple — see configurations

OEM configurations

Configuration	Front	Rear	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
SL 400 · 3.0L, V6, Petrol	8x17	8.5x18	ET30 / ET36	5.18 in	255/45R17 / 255/40R18	5x112	66.6 mm	M14 x 1.5
SL 400 · 3.0L, V6, Petrol	8.5x18	8.5x18	ET36	5.67 in	255/45R18 / 255/40R18	5x112	66.6 mm	M14 x 1.5
SL 400 · 3.0L, V6, Petrol	8.5x18	8.5x18	ET36	5.67 in	255/40R18	5x112	66.6 mm	M14 x 1.5
SL 550 · 4.7L, V8, Petrol	8.5x18	8.5x18	ET36	5.67 in	255/40R18	5x112	66.6 mm	M14 x 1.5
SL 550 · 4.7L, V8, Petrol	8.5x19	8.5x18	ET35 / ET36	5.63 in	255/35R19 / 255/40R18	5x112	66.6 mm	M14 x 1.5
SL 550 · 4.7L, V8, Petrol	8.5x19	8.5x18	ET36	5.67 in	255/35R19 / 255/40R18	5x112	66.6 mm	M14 x 1.5
SL 550 · 4.7L, V8, Petrol	8.5x19	8.5x18	ET35 / ET36	5.63 in	255/40R19 / 255/40R18	5x112	66.6 mm	M14 x 1.5
SL 550 · 4.7L, V8, Petrol	9x19	8.5x18	ET27 / ET36	5.56 in	255/35R19 / 255/40R18	5x112	66.6 mm	M14 x 1.5
SL 500 · 4.7L, V8, Petrol	8.5x18	8.5x18	ET36	5.67 in	255/40R18	5x112	66.6 mm	M14 x 1.5
SL 350 (RBA-231457) · 3.5L, V6, Petrol	8x17	8.5x18	ET30 / ET36	5.18 in	255/45R17 / 255/40R18	5x112	66.6 mm	M14 x 1.5
SL 350 (RBA-231457) · 3.5L, V6, Petrol	8.5x18	8.5x18	ET36	5.67 in	255/45R18 / 255/40R18	5x112	66.6 mm	M14 x 1.5
SL 350 (RBA-231457) · 3.5L, V6, Petrol	8.5x18	8.5x18	ET36	5.67 in	255/40R18	5x112	66.6 mm	M14 x 1.5
SL 550 (CBA-231473) · 4.7L, V8, Petrol	8.5x19	8.5x19	ET36	5.67 in	255/35R19	5x112	66.6 mm	M14 x 1.5
SL 550 (CBA-231473) · 4.7L, V8, Petrol	8.5x18	8.5x19	ET36	5.67 in	255/40R18 / 255/35R19	5x112	66.6 mm	M14 x 1.5
SL 550 (CBA-231473) · 4.7L, V8, Petrol	8.5x19	8.5x19	ET35 / ET36	5.63 in	255/35R19	5x112	66.6 mm	M14 x 1.5
SL 550 (CBA-231473) · 4.7L, V8, Petrol	9x19	8.5x19	ET27 / ET36	5.56 in	255/35R19	5x112	66.6 mm	M14 x 1.5
SL 550 (CBA-231473) · 4.7L, V8, Petrol	9x20	8.5x19	ET30 / ET36	5.68 in	255/30R20 / 255/35R19	5x112	66.6 mm	M14 x 1.5

Lug hardware

Real-World 2015 Mercedes-Benz SL-Class Wheel Setups

Observed aftermarket setups from documented Modified1 builds. These are individual build records — not OEM specifications and not clearance guarantees for every vehicle.

Common custom wheel sizes

Among builds in our database for this model year:

20-inch — 5 documented builds
19-inch — 4 documented builds

9 documented builds.

Diameter

2015 Mercedes-Benz SL-Class custom wheel setup

Staggered · 19×8.5 ET35 / 19×10 ET40

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: Niche Essen - M147

Front: 19×8.5 ET35 · 255/35R19
Rear: 19×10 ET40 · 285/30R19

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 1 mm farther toward fender (more outward poke)
Inner edge 1 mm farther from suspension (more inner clearance)
Diameter +1" vs OEM

View full build on Modified1

Staggered · 20×9 / 20×11

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: ADV.1 15 Track Spec

Front: 20×9
Rear: 20×11

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 20×10 / 21×13

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: HRE P103

Front: 20×10 · 285/30R20
Rear: 21×13 · 355/25R21

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 20×9 / 20×11

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: Modulare B33

Front: 20×9 · 255/30R20
Rear: 20×11 · 295/25R20

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 19×? / Rear unknown

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: Mandrus Simplex

Front: 19×?
Rear: —

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 19×9 / 20×10.5

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: Niche Citrine

Front: 19×9 · 235/35R19
Rear: 20×10.5 · 285/30R20

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

Staggered · 20×? / Rear unknown

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: Koko Kuture Massa-7

Front: 20×?
Rear: —

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 20×? / Rear unknown

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: Niche GT-5 - M133

Front: 20×?
Rear: —

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +2" vs OEM

View full build on Modified1

Staggered · 19×8.5 / 19×11

Documented on a 2015 Mercedes-Benz SL-Class build — observed custom fitment, not a universal fit guarantee.

Wheel: Niche Scuderia 5

Front: 19×8.5
Rear: 19×11

Compared with OEM

Compared with the 18×8.5 ET36 OEM configuration. Calculated geometry only — not fit confirmation.

Diameter +1" vs OEM

View full build on Modified1

More specs for the 2015 Mercedes-Benz SL-Class

Each OEM row is a catalog configuration. Offset ranges are not collapsed when the database has exact setups. Documented aftermarket builds are observed setups only — not universal fit or clearance confirmation.