2008 Acura RL Wheel Offset

ET55 · ET50 · ET45

Quick specs

OEM offset: ET55 · ET50 · ET45
Wheel size: 8x17 · 8x18 · 8.5x19 · 9x19
Backspacing: 6.17 in · 6.22 in · 6.27 in
Bolt pattern: 5×120
Center bore: 64.1 mm
Tire size: 245/50R17 · 245/45R18 · 245/40R19 · 255/40R19

OEM configurations

Configuration	Rim	Offset	Backspacing	Tire	Bolt pattern	Center bore	Thread
3.5i · V6, Petrol	8x17	ET55	6.17 in	245/50R17	5x120	64.1 mm	M14 x 1.5
3.5i · V6, Petrol	8x18	ET55	6.17 in	245/45R18	5x120	64.1 mm	M14 x 1.5
3.5i · V6, Petrol	8.5x19	ET50	6.22 in	245/40R19	5x120	64.1 mm	M14 x 1.5
3.5i · V6, Petrol	9x19	ET45	6.27 in	255/40R19	5x120	64.1 mm	M14 x 1.5

See how a different wheel would sit See wheel backspacing

What happens if you change the offset?

Compare your own setup

See how a different width or offset sits versus an OEM configuration for this year.

OEM baseline

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Wheels and hardware for this vehicle

Lug hardware

Wheel locks

Real-World 2008 Acura RL 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:

18-inch — 1 documented build

1 documented build.

Staggered · 18×8.5 ET30 / 18×9.5 ET34

Documented on a 2008 Acura RL build — observed custom fitment, not a universal fit guarantee.

Front: 18×8.5 ET30 · 245/40R18
Rear: 18×9.5 ET34 · 255/35R18

Compared with OEM

Compared with the 18×8 ET55 OEM configuration. Calculated geometry only — not fit confirmation.

Outer edge 31.3 mm farther toward fender (more outward poke)
Inner edge 18.7 mm farther from suspension (more inner clearance)
Width +0.5" vs OEM

View full build on Modified1

More specs for the 2008 Acura RL

OEM offsets are catalog configurations, not an aftermarket “safe ET range.” Matching offset alone does not confirm clearance. Documented custom builds are observed setups only.