[Alacritic]

Hello! I was planning on putting on the H&R sport spring set and I was wondering, after that, would 15mm spacers be too much for stock suspension? If yes, how much better would 12.5mm be?

[Samir72]

12mm front and 15mm is perfect with OEM 19” or 20” and tends to be what most people run myself included

[Alacritic]

Originally Posted by Samir72

12mm front and 15mm is perfect with OEM 19” or 20” and tends to be what most people run myself included

Okay, thanks boss

[johnung]

Originally Posted by Alacritic

Hello! I was planning on putting on the H&R sport spring set and I was wondering, after that, would 15mm spacers be too much for stock suspension? If yes, how much better would 12.5mm be?

Watch this video below. Spacers are subjective. One person will think something looks terrible with too much poke out of the wheel well and someone else will think it looks perfect.

This video provides very good angles to judge for yourself what appeals to you. It uses a stock 340i XDrive with stock square BMW 400M 18x8.0 ET34 wheels and 225/45-18 Continental runflat tires.

https://youtu.be/P-M1pvJ7A0Y

[Alacritic]

Originally Posted by johnung

Watch this video below. Spacers are subjective. One person will think something looks terrible with too much poke out of the wheel well and someone else will think it looks perfect.

This video provides very good angles to judge for yourself what appeals to you. It uses a stock 340i XDrive with stock square BMW 400M 18x8.0 ET34 wheels and 225/45-18 Continental runflat tires.

https://youtu.be/P-M1pvJ7A0Y

I was more concerned about the "health" of the suspension with 15mm and 12.5mm than look. I know what it will look like because ECS has stock and spacer pics next to each other.

[WagonHo]

I'm running the Dinan lowering springs on an F31 and with the OEM 400M 18" wheels mounted on winter tires, I use 12mm spacers up front and 15mm out back. Tires are flush, no problem at all with the suspension or xDrive. I originally ran longer lug bolts than stock to accomodate the rear spacers, but switched to studs.



You'll like it at 12/15, I suspect, and you should not have any problems.

Originally Posted by Alacritic

Hello! I was planning on putting on the H&R sport spring set and I was wondering, after that, would 15mm spacers be too much for stock suspension? If yes, how much better would 12.5mm be?

[Samir72]

Originally Posted by Alacritic

I was more concerned about the "health" of the suspension with 15mm and 12.5mm than look. I know what it will look like because ECS has stock and spacer pics next to each other.

I’ve been running my 12/15 for the past 3 years lowered on Eibach pro with both 722m 19’s and 660m 20’s with zero health issues

[alohasurftoad]

Originally Posted by Alacritic

I was more concerned about the "health" of the suspension with 15mm and 12.5mm than look. I know what it will look like because ECS has stock and spacer pics next to each other.

"health" in what way?

spacers increase the scrub radius(which affects dynamic toe), increase spring rate and turn radius. the increased track width at the rear of F3/4's will also increase understeer. there's also more shear load on the lug bolts or studs. all of this is on such a small level that it is unlikely you'd notice but the physics of what is happening. just so you know, they do more than just lower offset.