[BimmerHausPerformance]

Here they are, no spacers, I think it is a perfect fit!

[95blkmax]

sexiness!! Any full-lock rubbing on the front with those sticky steamrollers??

Looking great! How does handling compare before and after?

[remmib]

What offset are those? Nice fitment.

[Blue Angel]

Nicely done! What suspension mods and what wheel offset?

Here's a build thread I started, on square 275/35-20's:

F10 535d LCI Canada Build https://f10.5post.com/forums/showthread.php?t=1874367

[BimmerHausPerformance]

No rub at all, no additional NHV compared to the 18".

Offset is ET33.

Mods are BC coils revalued by redshift. About to install adjustable upper Control arms. I have other suspension mods but nothing that would affect fitment.

Question: I ran the same tires before in 245 but the 275's actually feel like they have LESS traction! Do the tires need to 'break in' OR could it be due to the huge weight reduction I took with the upgraded set up? I know and expected to see an improvement due to reducing sprung weight, but didn't think I'd gain enough performance to actually loose traction!

Thoughts?

[Blue Angel]

You're referring to traction accelerating with rwd, correct? How much rear camber are you running? Tire pressure? Too much camber and pressure on a wide tire can cause it to ride on its inside edge. What's good for handling grip can sometimes compromise acceleration/braking grip.

How's the balance with the square 275's? On mine the front end is FAR more eager to turn in, but I've changed a lot of things.

[BimmerHausPerformance]

Originally Posted by Blue Angel

You're referring to traction accelerating with rwd, correct? How much rear camber are you running? Tire pressure? Too much camber and pressure on a wide tire can cause it to ride on its inside edge. What's good for handling grip can sometimes compromise acceleration/braking grip.

How's the balance with the square 275's? On mine the front end is FAR more eager to turn in, but I've changed a lot of things.

Rear camber is within factory spec and tire pressure is standard, nothing crazy. So those things should not be factors, no change in camber between old/new set up.

It is RWD and I am talking about breaking loose in 2nd and 3rd (6speed manual). It is a custom tuned ps2 at around 450-500 whp so I don't expect perfect traction but it is noticeably different with these lighter wheels!

Wondering if anyone has experienced the same thing…

[Blue Angel]

Going from a 245/45-18 to a 275/35-19 does mean a shorter stiffer sidewall. I would start by trying lower tire pressures. If that works but only at pressures too low, you can consider taking some camber out of the rear.

I'm using a 9.5" rear wheel ET33 as well, but I've reduced my rear camber from -1.8 deg (stock) to -1.3 deg. This is for more balanced handling and more even tire wear. I'm XDrive though, so can't comment on traction with the F10.

Also check your toe-in. Excessive toe can cause loss of traction, which is exacerbated by stiffer sidewalls.

These same tricks worked well on my Vette running a 305 rear.

[BimmerHausPerformance]

What kinda psi are you running? Also, could lighter wheels reduce traction at all?

[mike@x-ph.com]

Nice

[Blue Angel]

Originally Posted by BrowBMW

What kinda psi are you running? Also, could lighter wheels reduce traction at all?

On the Vette 30 for regular driving and I drop to between 20-22 for the drag strip. You might need a little higher since this is a 305/35 with a taller sidewall on a much lighter car.

On the F10 I use 36 all around but I may reduce that slightly, main target is to equalize wear.

Some roads around here are not great and I want to smooth the ride a little. 36 might be overkill with such a wide tire all around, but the handling and balance are very good right now.

EDIT: All else equal, lighter wheels should (in theory) increase traction. Reducing unsprung weight is supposed to allow the suspension to keep the tire in better contact with the road.

[ApexWheels]

Originally Posted by BrowBMW

Here they are, no spacers, I think it is a perfect fit!

Love seeing this setup! Mind if we add these photos to our Flickr Library? We are sorely lacking F10 images.

I typically recommend 255/40-19 tires when speccing these wheels for customers, but from the looks of things that sounds conservative. Did you have the wheels before the BC coils? Any decrease in ride comfort with 35 sidewall tires?

-Tom

[BimmerHausPerformance]

Originally Posted by ApexRaceParts

Love seeing this setup! Mind if we add these photos to our Flickr Library? We are sorely lacking F10 images.

I typically recommend 255/40-19 tires when speccing these wheels for customers, but from the looks of things that sounds conservative. Did you have the wheels before the BC coils? Any decrease in ride comfort with 35 sidewall tires?

-Tom

Please do! Give a shout out to my insta if you can @bimmerhausperformance

I did have the BC coils before these but I was on 255 45 18's and their is absolutely NO ride difference regarding the sidewall. I am probably around 500ish WHP so the only difference was a LOSS of traction with such a huge reduction in sprung weight!

I love these things, get a TON of compliments.

[ApexWheels]

Originally Posted by BrowBMW

Please do! Give a shout out to my insta if you can @bimmerhausperformance

I did have the BC coils before these but I was on 255 45 18's and their is absolutely NO ride difference regarding the sidewall. I am probably around 500ish WHP so the only difference was a LOSS of traction with such a huge reduction in sprung weight!

I love these things, get a TON of compliments.

Sounds good, we'll include the IG comment in the notes. Thanks for running them and the feedback!

-Tom

[Sylverlee]

Tires do always a break in period. First 500 miles can be squirrelly

[Blue Angel]

Originally Posted by ApexRaceParts

I typically recommend 255/40-19 tires when speccing these wheels for customers, but from the looks of things that sounds conservative.

275 is a tight fit on the front of an F10, which is likely why it's not done often. I would be careful recommending this to people who are not able to analyze ahead of time.

I'm using a 275/35-20 on a 9.5" et30 (thread linked above) and there's not much room on the inside even with the Indy 500 which has no rim protection. Michelins have a large rim protection bead as seen here, so in conjunction with the et33 wheel (3mm less) it will be tight.

At et30 mine will rub the fender with too much steering angle entering a steep driveway. I believe the Indy 500 has a wider tread than the PS4S, which goes to show this is not a "safe" fitment that will just work for everyone.

Also, on a car that's not lowered they will likely poke on the front given the aggressive camber gain at this ride height.

Food for thought. These Apex wheels really do look good on the F10 though! An ex coworker had these on his E90 and I always thought they looked fantastic! Too bad you don't offer them in 20" sizes.

[BimmerHausPerformance]

Originally Posted by Blue Angel

275 is a tight fit on the front of an F10, which is likely why it's not done often. I would be careful recommending this to people who are not able to analyze ahead of time.

I'm using a 275/35-20 on a 9.5" et30 (thread linked above) and there's not much room on the inside even with the Indy 500 which has no rim protection. Michelins have a large rim protection bead as seen here, so in conjunction with the et33 wheel (3mm less) it will be tight.

At et30 mine will rub the fender with too much steering angle entering a steep driveway. I believe the Indy 500 has a wider tread than the PS4S, which goes to show this is not a "safe" fitment that will just work for everyone.

Also, on a car that's not lowered they will likely poke on the front given the aggressive camber gain at this ride height.

Food for thought. These Apex wheels really do look good on the F10 though! An ex coworker had these on his E90 and I always thought they looked fantastic! Too bad you don't offer them in 20" sizes.

I have a buddy with xdrive lowered with 285's on a square set up but I didn't want to go that wide… you can go even wider than 275's and not rub!!!

[ApexWheels]

Originally Posted by Blue Angel

275 is a tight fit on the front of an F10, which is likely why it's not done often. I would be careful recommending this to people who are not able to analyze ahead of time.

I'm using a 275/35-20 on a 9.5" et30 (thread linked above) and there's not much room on the inside even with the Indy 500 which has no rim protection. Michelins have a large rim protection bead as seen here, so in conjunction with the et33 wheel (3mm less) it will be tight.

At et30 mine will rub the fender with too much steering angle entering a steep driveway. I believe the Indy 500 has a wider tread than the PS4S, which goes to show this is not a "safe" fitment that will just work for everyone.

Also, on a car that's not lowered they will likely poke on the front given the aggressive camber gain at this ride height.

Food for thought. These Apex wheels really do look good on the F10 though! An ex coworker had these on his E90 and I always thought they looked fantastic! Too bad you don't offer them in 20" sizes.

I typically recommend a 5mm front spacer in most cases with the 19x9.5 ET33. This combined with the narrower 255 tire seems to work well, but it's always good to see wider setups.

We will be moving into 20" wheels with our new Sprint Line forged wheels so we'll have options in the future!

-Tom

[Unspec]

Originally Posted by ApexRaceParts

I typically recommend a 5mm front spacer in most cases with the 19x9.5 ET33. This combined with the narrower 255 tire seems to work well, but it's always good to see wider setups.

We will be moving into 20" wheels with our new Sprint Line forged wheels so we'll have options in the future!

-Tom

Any chance the VS-5RS in 5x120 20" will be on the road map soon? I looked at the sizing table and it looks like it's not a projected option yet.

[Blue Angel]

Originally Posted by BrowBMW

I have a buddy with xdrive lowered with 285's on a square set up but I didn't want to go that wide… you can go even wider than 275's and not rub!!!

Looks like he's running a 275/40-18 square setup. Based on what I can see on his front fitment I'll bet you a VERY nice steak dinner he rubs with any steering angle + 1" or more of compression travel on his inside front wheel. Again, based on what I see in pic #2 he's got a more aggressive looking fitment than mine and mine will rub. He's more aggressive than mine, and mine looks to be more aggressive than yours.

It's possible to drive a car in a manner that doesn't cause it to rub, but that doesn't mean it can't/won't rub. If you really want I can take a pic of my fender lip.

If you're curious, check out the PS4S in 275/35-20 on Tire Rack. They make four different tires in that same make/model/size, and they're all different tread widths, some quite narrow, and IIRC all narrower than the Indy 500 in the same size. Your fitment appears to have decent outboard clearance, so based on that I'd say you're much less likely to rub than I am.

[BimmerHausPerformance]

You are right, I just spoke to him and he is 275's on 18's with only a 22 offset. He does not rub. He is on kv3's.

[Blue Angel]

My winter front fitment is 408m 19x9 et32. I run a 10mm spacer for an et22, and I use a 245. I will admit they rub.

Full disclosure: my tires are 1" larger diameter than stock, so for a given vertical fender gap I will be 1/2" less lowered. BUT, I have -0.5 degree camber arms installed which pulls the top of the tire inboard by about 5mm which more than offsets the 1/2" difference in camber curve of the suspension being higher.

So according to the internet:

275 et22: no rubbing
245 et22: rubs

Sounds about right!