Spacers for Aftermarket Wheels
11-16-2011, 05:46 AM
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Have an '08 550i. Car came with the following:
Front: 19x9 with et 20
Rear: 19x10 with et of 20
Stock tire size
Stock 172 wheels are:
Front: 19x8.5 with et 18
Rear: 19x9.5 with et 32
The rears do look pushed out pretty flush but feel I could get away with a 3mm spacer. I assume this would get me down to a net offset of 17. Seems I have read that most go with a 15 mm spacer on the rear of 172 rims which is net 17 as well. However, my wheels are .5" wider. Will this make a difference for these wheels and the spacer needed.
The fronts appear recessed more I guess due to et of 20 vs. stock of 18. I was thinking 5mm on the front but once again knowing the wheel is .5" wider will I still be okay. This would get me down to 15 offset very close to the 12 that is on the m5 166 wheel many like to run. tks
Front: 19x9 with et 20
Rear: 19x10 with et of 20
Stock tire size
Stock 172 wheels are:
Front: 19x8.5 with et 18
Rear: 19x9.5 with et 32
The rears do look pushed out pretty flush but feel I could get away with a 3mm spacer. I assume this would get me down to a net offset of 17. Seems I have read that most go with a 15 mm spacer on the rear of 172 rims which is net 17 as well. However, my wheels are .5" wider. Will this make a difference for these wheels and the spacer needed.
The fronts appear recessed more I guess due to et of 20 vs. stock of 18. I was thinking 5mm on the front but once again knowing the wheel is .5" wider will I still be okay. This would get me down to 15 offset very close to the 12 that is on the m5 166 wheel many like to run. tks
11-16-2011, 06:07 AM
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Most 19x10 have Offsets of 22,25,28 what brand are these and do you have pics?
Run a 5mm on the front to have piece of mind that the rim and or tire doesnt get to close to the strut
Run a 5mm on the front to have piece of mind that the rim and or tire doesnt get to close to the strut
11-16-2011, 06:22 AM
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Wheels are Forgestar F14. I have a new rim in the box that came with the car and the box states et 20. Think 3mm is okay?
11-18-2011, 05:24 AM
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from my understanding, i inch in rim difference is equal to 14mm in offset difference.
So a 19x10 et 20 rim = 19x9.5 et 13 rim in terms of how far the rims are out.. If you add a 3mm spacer, it be et 10. Have to be sure it will not rub before adding.
So a 19x10 et 20 rim = 19x9.5 et 13 rim in terms of how far the rims are out.. If you add a 3mm spacer, it be et 10. Have to be sure it will not rub before adding.
11-18-2011, 07:01 AM
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My next question is will a spacer even work since these wheels required a hub centering ring?
11-18-2011, 11:24 AM
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My Ride: SOLD...Jet Black 2008 550i M Sport with SAT, black interior. RPI exhaust and air scoop, 35% huper optik tint all around, CF roundels, flat black kidneys, Springfield Armory XD-40 jet black in glove box, charcoal filter removed.
Thanks for that information. I think the rears are good after doing some measuring per Turner Motor Sports site. 3mm might be a waste of money for the rears even if I could squeeze them in. The fronts then would be at et 13 but a measurement reveals a 5mm should work fine but that would put me at et 8 which seems awfully low assuming the offset changes by 7mm as you posted.
My next question is will a spacer even work since these wheels required a hub centering ring?
My next question is will a spacer even work since these wheels required a hub centering ring?
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