[SITREP]

I apologize if this has been answered numerous times before....but what are the correct front and rear offsets for 20" wheels on a 2015 535i m-sport? I'm thinking of picking up a set of staggered 20x8.5 and 20x10 wheels from EBay with offsets et35 front and et40 rear. (I believe they are a leftover set of Avant Garde m355s)

Will these fit without any rubbing or fender trimming? Thanks in advance I'm a learning newbie!

[SonicEndeavor]

Here's the info I have comparing to the M5 stock wheels, which do fit the non-M 5 series cars (I believe this info was gathered by Shawn in another forum).
The 295's are pretty tight, so 275 or 285 rears are better.

Stock 19"

F10 535i M-Sport 19" M Double Spoke Style 351M Cast Wheel Set
Front Wheels - 8.5JX19 ET:33 - 245/40R19 - 14,53 kg 32 lb
Rear Wheels - 8.5JX19 ET:33 - 245/40R19 - 14,53 kg 32 lb
Rear Wheels (if staggered setup ordered) - 9JX19 ET:44 - 275/35R19 - 14,51 kg 32 lb
Non-M F10 19" and 20" wheels are 19x8.5 ET33 and 19x9 ET44.

20"

F10 M5 20" M Double Spoke Style 343M Forged Wheel Set
Front Wheels - 9JX20 ET:34 - 265/35R20 - 11,20 kg 24.7 lb
Rear Wheels - 10JX20 ET:34 - 295/30R20 - 11,70 kg 25 lb

[valbmw]

Originally Posted by SITREP

I apologize if this has been answered numerous times before....but what are the correct front and rear offsets for 20" wheels on a 2015 535i m-sport? I'm thinking of picking up a set of staggered 20x8.5 and 20x10 wheels from EBay with offsets et35 front and et40 rear. (I believe they are a leftover set of Avant Garde m355s)

Will these fit without any rubbing or fender trimming? Thanks in advance I'm a learning newbie!

This is very important question, and there is a lot of info with pics on the F10 forums. To help you in your research, please see the post #3 here: http://f10.5post.com/forums/showthre...2#post17007692 It is confirmed that the front of 8.5" you can have with ET20 and the rear 10" you can have with ET28 maybe 25. Therefore you can take safely that set from ebay, and then add 12-15mm spacers with extended lug bolts all around, for flush look.

[VMRWheels]

Here's an example of 20x9 ET35 | 20x10 ET35 (no rubbing or fender modification!)








Link to the full mod list: http://www.velocitymotoring.com/v710...-bmw-f10-535i/[/QUOTE]

[SITREP]

Thanks for the pics. Does the car in the photos use spacers? If so, how many mm front and rear? Is there a way I can calculate how many mm spacers I will need for a given offset number? Just trying to ensure I pick up all of the correct gear!

Originally Posted by VMRWheels

Here's an example of 20x9 ET35 | 20x10 ET35 (no rubbing or fender modification!)








Link to the full mod list: http://www.velocitymotoring.com/v710...-bmw-f10-535i/

[/QUOTE]

[SITREP]

Originally Posted by Valery.BMW

This is very important question, and there is a lot of info with pics on the F10 forums. To help you in your research, please see the post #3 here: http://f10.5post.com/forums/showthre...2#post17007692 It is confirmed that the front of 8.5" you can have with ET20 and the rear 10" you can have with ET28 maybe 25. Therefore you can take safely that set from ebay, and then add 12-15mm spacers with extended lug bolts all around, for flush look.

Thank you for the info! I just want to make sure I have this correct: the smaller the offset number, the father the wheel hub is from the front face/edge of the wheel? And the offsets of the wheels I was going to purchase (ET 35, ET 40) mean that the wheel hub is closer to the front/face edge of the weel? Hence the need for spacers.

Is the ET 35 number a measure of the offset in mm? And to figure out the required spacer do I just subtract the OEM wheel offset from the offset of the wheel I am considering? (Ex: ET35 - ET20 = 15 mm spacer??

[SonicEndeavor]

The 20" specs I posted above (ET 35) will give you a flush setup. You can adjust from there as needed. Yes, offset is in millimeters from the center.

[VMRWheels]

Originally Posted by SITREP

Thanks for the pics. Does the car in the photos use spacers? If so, how many mm front and rear? Is there a way I can calculate how many mm spacers I will need for a given offset number? Just trying to ensure I pick up all of the correct gear!

[/QUOTE]

No spacers used on that car True plug-n-play setup

If you wanted to add spacers to help push the wheel out further to the fender, feel free to reference the links below:

EX: ET35 + 5mm spacer = ET30 (5mm further out towards fender, 5mm further away from suspension)

http://daliracing.com/v666-5/catalog...k-your-gap.jpg
http://www.1010tires.com/Tools/Wheel-Offset-Calculator

[valbmw]

Originally Posted by SITREP

Thank you for the info! I just want to make sure I have this correct: the smaller the offset number, the father the wheel hub is from the front face/edge of the wheel? And the offsets of the wheels I was going to purchase (ET 35, ET 40) mean that the wheel hub is closer to the front/face edge of the weel? Hence the need for spacers.

Is the ET 35 number a measure of the offset in mm? And to figure out the required spacer do I just subtract the OEM wheel offset from the offset of the wheel I am considering? (Ex: ET35 - ET20 = 15 mm spacer??

You are absolutely correct. The wheel set you want to purchase will fit your car with no problem, the specifications are nearly OEM. And then depending on your aesthetic expectations you can measure the gaps to fenders and add spacers, or don't do it at all since it is totally optional.

[SITREP]

Thank you so much to all who have responded with advice, I really appreciate it. With all of your help, I think I have this sorted out:

Stock staggered M-sport wheels are 19x8.5 ET 33 front, 19x9 ET 44 rear
New wheels are 20x8.5 ET 35 front, and 20x9.5 ET 40 rear.

Using the calculator provided by VMRWheels, this gives:
Front: 2mm less inner strut clearance and 2mm inward retraction from fender
Rear: 2mm less inner strut clearance and 10 mm outward extension from fender

Given these small numbers, am I correct in assuming that I won't need spacers for the front? (certainly not for the rear!)

Also, can anyone recommend a high quality non-runflat tire that does not generate too much road noise??

[SITREP]

One last question, what is the correct wheel hub center bore to fit on the stock 535i hub?

[SonicEndeavor]

It depends on what type of tires you need(summer, all-season, winter)
If you're going to run 265's up front and 295's in the rears (same setup as an M5), then Michelin Pilot Super Sports are a great choice, 285's or 275's then Pirelli P Zeros. These are all summer performance tires though.
Check www.tirerack.com for options.

[SITREP]

Originally Posted by SonicEndeavor

It depends on what type of tires you need(summer, all-season, winter)
If you're going to run 265's up front and 295's in the rears (same setup as an M5), then Michelin Pilot Super Sports are a great choice, 285's or 275's then Pirelli P Zeros. These are all summer performance tires though.
Check www.tirerack.com for options.

I'll be running summer tires all around. I've heard rear 295s are a bit tight and was planning on going with 285s. For the front, the stock width is 245. How do I determine what width I can increase it to (ie 255, 265)? The new rim is the same 8.5 inch width as stock.

[valbmw]

Originally Posted by SITREP

One last question, what is the correct wheel hub center bore to fit on the stock 535i hub?

First of all, you won't need spacers at all until you want more flush look hence more aggressive aesthetics. This is totally complementary.

The best summer tires are Michelin Super Sport. Then Pirelli P Zero and Hankook V12 that are cheaper. For 8.5" front and 10" rear you'll need 245/35ZR20 and 285/30ZR20.

Wheel specs for BMW F10 = PCD 5x120, centre bore 72.5mm and M14x1.25 bolt thread. ET 33-44 http://www.bmwforums.info/bmw-wheels...olt-sizes.html

[SonicEndeavor]

Check at tirerack but I believe the widest recommended tire on an 8.5" rim is 255.

[SITREP]

Originally Posted by Valery.BMW

First of all, you won't need spacers at all until you want more flush look hence more aggressive aesthetics. This is totally complementary.

The best summer tires are Michelin Super Sport. Then Pirelli P Zero and Hankook V12 that are cheaper. For 8.5" front and 10" rear you'll need 245/35ZR20 and 285/30ZR20.

Wheel specs for BMW F10 = PCD 5x120, centre bore 72.5mm and M14x1.25 bolt thread. ET 33-44 http://www.bmwforums.info/bmw-wheels...olt-sizes.html

Thanks again for the info. My rear wheels will be 20x9.5, instead of 20 x10. Should I go with a 275 width tire or a 285 width tire?

[valbmw]

I would say, both setups are fine, either 245/35/20 front with a 275 or 285 (slightly better)/30/20 rear. It depends on your future plans on your rims+tires. The 275 rear is a bit cheaper and sits better on the 9.5" wide rim, so if you won't replace the rims later, stick on the 275. If you will replace them with 10" wide rear, then have the 285.

[SITREP]

Thanks again guys. So I did a search on tire rack, and found the following tires (all summer performance, 285/30ZR20):

Bridgestone Potenza S-O4 - $253
Bridgestone Potenza RE760 - $230
Hankook Ventus V12 Evo2 - $243
Michelin Pilot Super Sport - $347
Pirelli P Zero - $381
Yokohama S.drive - $244

Any recommendations? Any specific ones to definitely avoid?

[bake]

I am running the Hankook's and think they are great tires for the price. I have had Michelin Pilot Sports on other vehicles and agree it is a better tire, but it is also a premium price for those. Just my $0.02.

Originally Posted by SITREP

Thanks again guys. So I did a search on tire rack, and found the following tires (all summer performance, 285/30ZR20):

Bridgestone Potenza S-O4 - $253
Bridgestone Potenza RE760 - $230
Hankook Ventus V12 Evo2 - $243
Michelin Pilot Super Sport - $347
Pirelli P Zero - $381
Yokohama S.drive - $244

Any recommendations? Any specific ones to definitely avoid?

[SITREP]

Originally Posted by bake

I am running the Hankook's and think they are great tires for the price. I have had Michelin Pilot Sports on other vehicles and agree it is a better tire, but it is also a premium price for those. Just my $0.02.

Thanks! I plan on getting the Hankooks. How is the road noise compared to the stock 19" run flats? Quieter? Also, is the ride quality overall softer and not as harsh? I've had RFTs on earlier bmws and found them a bit harsh.

[VMRWheels]

Originally Posted by SITREP

Thanks! I plan on getting the Hankooks. How is the road noise compared to the stock 19" run flats? Quieter? Also, is the ride quality overall softer and not as harsh? I've had RFTs on earlier bmws and found them a bit harsh.

Most forum members would say that ANY non runflat is better (in terms of ride quality, performance, road noise) when compared to the OE setup. Runflats just naturally have that stiffer sidewall.

The Hankook V12 EVO2 and Noble S12 are well known for being an excellent bang-for-your-buck tire. Check out TireRack.com, they have comprehensive reviews on a lot of different options.

[SITREP]

Originally Posted by VMRWheels

Most forum members would say that ANY non runflat is better (in terms of ride quality, performance, road noise) when compared to the OE setup. Runflats just naturally have that stiffer sidewall.

The Hankook V12 EVO2 and Noble S12 are well known for being an excellent bang-for-your-buck tire. Check out TireRack.com, they have comprehensive reviews on a lot of different options.

Thanks. I'll be going with the Hankook Ventus V12s. Question, many of the big name tire shops claim to refuse to install non-RFTs on vehicles that come with run flats as OEM equipment. How do you guys get around this? Will they do it anyway with some coaxing?