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The quest for wider wheels and tires, 295, 305 and beyond...

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In the next week or so I'll be picking up a set of wheels. Looking at 19x11. Curious as to what would be the best offset for them? I'm eventually going 305+, so I'd like to go wider than 10.5 to start.
Looks like anything in a decent offset is going to be pretty spendy. I guess 19x 10.5 will be it for now. And before anyone questions it, yes, all the normal wide wheel/tire supporting mods are included.
 
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Very happy new '23 M3P owner here

Any concerns with 19x10 +40 fronts with 275/35 PS4S and 19x11 +55 305/30 PS4S? Stock everything.

Looks like plenty of clearance in the rear and tires are well under the fender. Fronts will need 3-5mm spacers, and stick out a little. This will be my track setup (long track, no autocross or hill climbs)
I've read most of this thread, but there's a LOT to digest.

What areas should I be checking for rubbing?
Will I have issues with the outside of the tire? (read the post about cutting the outside of the tire auto-crossing)
Will I have issues at full compression?
And can I run 5mm spacers with stock studs (I'm not sure what 'giving up precious knuckle clearance' means)

I understand this wont be the fastest setup, but I already have these wheels/tires from my previous car.

Clearance (with janky 5/16" spacers)
IMG_3276.jpg

Front (top down view)
IMG_3285.jpg

Rear: (top down view)
IMG_3284.jpg
 
Very happy new '23 M3P owner here

Any concerns with 19x10 +40 fronts with 275/35 PS4S and 19x11 +55 305/30 PS4S? Stock everything.

Looks like plenty of clearance in the rear and tires are well under the fender. Fronts will need 3-5mm spacers, and stick out a little. This will be my track setup (long track, no autocross or hill climbs)
I've read most of this thread, but there's a LOT to digest.

What areas should I be checking for rubbing?
Will I have issues with the outside of the tire? (read the post about cutting the outside of the tire auto-crossing)
Will I have issues at full compression?
And can I run 5mm spacers with stock studs (I'm not sure what 'giving up precious knuckle clearance' means)

I understand this wont be the fastest setup, but I already have these wheels/tires from my previous car.

Clearance (with janky 5/16" spacers)
View attachment 911343
Front (top down view)
View attachment 911344
Rear: (top down view)
View attachment 911342
Like the fitment. What wheels?
 
@Dreamin I am currently running MRR M350 in 19x10 ET40 square. I am using 265/40/19 tires. I'm also using 5mm spacers and it clears width wise easily. The tires are too tall so there is very little height clearance (maybe 1-2mm) but does not rub. 265/35/19 would be ideal. I used these wheels and tires on my S550 Mustang GT so I wanted to see if they would work. I think 275/35 would be tight.

You can get 5mm spacers from Danny at Modelplus. No issue on the length of the studs when using a 5mm spacer.

 
What areas should I be checking for rubbing?
Front fender, inner upright. Maybe inner linkages in the rear. I'm not aware of people running a +55 offset in the rear, that's pretty deep. While there is plenty of space, the is a limit somewhere. So, maybe take the spring off and run the wheel through its potential travel to check.
Will I have issues with the outside of the tire? (read the post about cutting the outside of the tire auto-crossing)
Yes, potentially it can rub. You setup will be marginally closer to the fender than the linked 265/35-19 setup on 19x9 +30 wheel. (You're on +35 effective offset + 5mm wider tire, +mounted on a wider rim).
Will I have issues at full compression?
See above.
And can I run 5mm spacers with stock studs (I'm not sure what 'giving up precious knuckle clearance' means)
Possibly, but a lot depends on a particular rim's lug seat thickness. Count the turns required to tighten with your 5/16" spacer (8ish mm) and add two. If that number is over 7.5, you should be safe-ish.

Also, you need to zip-tie those wheel sensors to the upright.
 
Regrettably, the Goodyear Supercar 3R in a 305...is not a 305. They measure 330mm wide.

The Falken RT660 in a 305 measures...305mm.

The Kumho V730's in a 275 measure 280mm.

Unfortunately, I can't see any way of fitting an entire inch more of tread on this car. Oh, and they shipped me tires with 3-year old DOT's again - so there's that. At the very least, I can provide a nice visual representation of just how massive they are.

PXL_20230226_165524860.jpg
 
Regrettably, the Goodyear Supercar 3R in a 305...is not a 305. They measure 330mm wide.

The Falken RT660 in a 305 measures...305mm.

The Kumho V730's in a 275 measure 280mm.

Unfortunately, I can't see any way of fitting an entire inch more of tread on this car. Oh, and they shipped me tires with 3-year old DOT's again - so there's that. At the very least, I can provide a nice visual representation of just how massive they are.

View attachment 915900
Is there problem in the rear or in front? or both?

I know UPP sells wider fenders for the front that might help you.
 
Pffft 8 in the office and 4 in the shop is the hip way to do it. 😅
I actually have 24 in the garage, I just only have 8 of them stacked to the roof. (look carefully, a stack of 4 by the garage door, 4 more on the wall, 4 more on the car, 4 more somewhere else...)

But I also work from home, so can I claim I have 24 at my office? ;)