Aggressive wheel & tire fitment questions

[texasrr]

New to this board, but did quite a bit of research and still not clear on the best possible options for an aggressive offset. I have an '15 xdrive50i M and my goal is to have a wheel/tire combo with enough sidewall and sits flush with the fenders. Also want to make sure the tires do not jam the wheel well under compression.

Below are a few options of tire sizes, but I don't know what offset I need to be flush with the fenders. I also will be using aftermarket wheels.

1. 285/35R22 - 29.88" tall
2. 275/45R20 - 29.8" tall
3. 275/45R22 - 31. 8" tall (might not fit and rubbing depends on wheel width and offset)

On an xDrive, the overall tire and wheel height needs to be the same all around or the front and back are within a 1 to 2% delta to not have issues. The f15 stock tire heights are 19"-29.03", 20"-28.66", and 21"-28.854". If all 4 are over 29" or even 30" there doesn't seem to be a problem, as long as they're all equal.

After researching the forum and from the math, I could still run these tire sizes in a staggered set up. That would mean the rear wheels would have to be a certain width and offset. I just don't know what that is.

A popular set up I've read is:
Front: 295/30R22 on 22x10.5 ET25. total poke:108.4mm
Rear: 335/25R22 on 22x12 ET35. total poke: 117.4 mm

If that's the case, the wheel offset and width for a 285/35R22 tire would need to be either:

For the front
22x10 ET 20. total poke: 107mm
22x10.5 ET 25. total poke: 108.4mm

For the back
22x10 ET 10. total poke: 117mm
22x10.5 ET 15. total poke: 118.4 mm
22x11 ET 25. total poke: 114.7mm
22x11.5 ET 30. total poke: 116.1mm
22x12 ET 35. total poke: 117.4mm

Problem is, the further the wheel and tire are from the wheel well, the higher likelyhood of it rubbing the inner wheel well. One member has 285/35R22 and with a 40mm offset experiences slight rubbing at full lock.

If anyone has pictures of larger tires it would be interesting to hear your feedback on rubbing or clearing the outer wheel well when articulating. I know this is a long winded post, but wanted to have all the facts out there for reference. I appreciate any help on this.

[M302_imola]

Good job on doing you're homework I'm super close to pulling the trigger on some 22" reps.

Wheels specs:
22 X 10 Front +40 offset
22 X 11 Rear +35 offset

I've decided the most aggressive I'm willing to go with tires is:

295/30/R22 Fronts
335/25/R22 Rears

I'll attach the tire calculator comparing the two:

[texasrr]

This is one of the recommendations I've heard before from a few shops. My only issue is the tire height isn't enough. I would prefer to have a little more meat on the tires. Below are two different set ups I'm considering after a few phone calls.

Square:
22x9 ET 20 w/ 285/35r22 - height 29.88" - Supposedly front will sit flush and back may sit flush. Could always add an HR hubcentric 11mm space in the rear to push it out to sit flush.

Staggered conservative:
Front: 22x9 ET 20 w/ 295/30r22- height 29.02"
Rear: 22x11 ET 25 w/335/25r22 - height 28.62"
delta of 0.4 mm or 0.016" - will be fine for xDrive

Staggered aggresive:
Front: 22x9 ET 20 w/ 285/35r22 - height 29.88"
Rear: 22x11 ET 25 w/ 295/35r22 - height 30.12"
delta of 0.24 mm or 0.009" - will be fine for xDrive
With these offsets I'm not sure if they will rub.

I'm doing more research to see where I land.

[M302_imola]

Square would be nice but staggered looks so much more aggressive. Sucks you can't rotate tires but that's a reason I'm looking at cheaper tires (Atturo)

[texasrr]

Originally Posted by M302_imola

Square would be nice but staggered looks so much more aggressive. Sucks you can't rotate tires but that's a reason I'm looking at cheaper tires (Atturo)

The Toyo Proxes III seem to be the best bang for your buck and be a quality tire. Pirelli and Continental also have tires for the staggered set up, but are a little more than the Toyo. Depending on size the Nitto Invo or 420S is also an option.

[r33_RGSport]

Going bigger on the overall diameter is fine generally, but remember that you will have a wrong speed reading, might have rubbing issue, and might cause damage to your transmission and/or transfer case if the difference ratio is not correct.

[diesel733]

Originally Posted by texasrr

New to this board, but did quite a bit of research and still not clear on the best possible options for an aggressive offset. I have an '15 xdrive50i M and my goal is to have a wheel/tire combo with enough sidewall and sits flush with the fenders. Also want to make sure the tires do not jam the wheel well under compression.

Below are a few options of tire sizes, but I don't know what offset I need to be flush with the fenders. I also will be using aftermarket wheels.

1. 285/35R22 - 29.88" tall
2. 275/45R20 - 29.8" tall
3. 275/45R22 - 31. 8" tall (might not fit and rubbing depends on wheel width and offset)

On an xDrive, the overall tire and wheel height needs to be the same all around or the front and back are within a 1 to 2% delta to not have issues. The f15 stock tire heights are 19"-29.03", 20"-28.66", and 21"-28.854". If all 4 are over 29" or even 30" there doesn't seem to be a problem, as long as they're all equal.

After researching the forum and from the math, I could still run these tire sizes in a staggered set up. That would mean the rear wheels would have to be a certain width and offset. I just don't know what that is.

A popular set up I've read is:
Front: 295/30R22 on 22x10.5 ET25. total poke:108.4mm
Rear: 335/25R22 on 22x12 ET35. total poke: 117.4 mm

If that's the case, the wheel offset and width for a 285/35R22 tire would need to be either:

For the front
22x10 ET 20. total poke: 107mm
22x10.5 ET 25. total poke: 108.4mm

For the back
22x10 ET 10. total poke: 117mm
22x10.5 ET 15. total poke: 118.4 mm
22x11 ET 25. total poke: 114.7mm
22x11.5 ET 30. total poke: 116.1mm
22x12 ET 35. total poke: 117.4mm

Problem is, the further the wheel and tire are from the wheel well, the higher likelyhood of it rubbing the inner wheel well. One member has 285/35R22 and with a 40mm offset experiences slight rubbing at full lock.

If anyone has pictures of larger tires it would be interesting to hear your feedback on rubbing or clearing the outer wheel well when articulating. I know this is a long winded post, but wanted to have all the facts out there for reference. I appreciate any help on this.

Originally Posted by texasrr

New to this board, but did quite a bit of research and still not clear on the best possible options for an aggressive offset. I have an '15 xdrive50i M and my goal is to have a wheel/tire combo with enough sidewall and sits flush with the fenders. Also want to make sure the tires do not jam the wheel well under compression.

Below are a few options of tire sizes, but I don't know what offset I need to be flush with the fenders. I also will be using aftermarket wheels.

1. 285/35R22 - 29.88" tall
2. 275/45R20 - 29.8" tall
3. 275/45R22 - 31. 8" tall (might not fit and rubbing depends on wheel width and offset)

On an xDrive, the overall tire and wheel height needs to be the same all around or the front and back are within a 1 to 2% delta to not have issues. The f15 stock tire heights are 19"-29.03", 20"-28.66", and 21"-28.854". If all 4 are over 29" or even 30" there doesn't seem to be a problem, as long as they're all equal.

After researching the forum and from the math, I could still run these tire sizes in a staggered set up. That would mean the rear wheels would have to be a certain width and offset. I just don't know what that is.

A popular set up I've read is:
Front: 295/30R22 on 22x10.5 ET25. total poke:108.4mm
Rear: 335/25R22 on 22x12 ET35. total poke: 117.4 mm

If that's the case, the wheel offset and width for a 285/35R22 tire would need to be either:

For the front
22x10 ET 20. total poke: 107mm
22x10.5 ET 25. total poke: 108.4mm

For the back
22x10 ET 10. total poke: 117mm
22x10.5 ET 15. total poke: 118.4 mm
22x11 ET 25. total poke: 114.7mm
22x11.5 ET 30. total poke: 116.1mm
22x12 ET 35. total poke: 117.4mm

Problem is, the further the wheel and tire are from the wheel well, the higher likelyhood of it rubbing the inner wheel well. One member has 285/35R22 and with a 40mm offset experiences slight rubbing at full lock.

If anyone has pictures of larger tires it would be interesting to hear your feedback on rubbing or clearing the outer wheel well when articulating. I know this is a long winded post, but wanted to have all the facts out there for reference. I appreciate any help on this.

I'm running with Xdrive.

Vorsteiner

Front 22x10 +35 w/ 5mm spacers and 295/30/22
Rear: 22x11 +30 w/ 12mm spacers and 335/25/22
Lowered on H&R Spring

Ratio diameter difference between front and rear is 1.4%. Been running this for a few month. No drive train issues or code thrown. Wheels are flush to the fender with the spaces. Without spacers, it will tuck inside the fenders. Tires are flush with the rim. Doesn't stretch.

[texasrr]

Originally Posted by diesel733

I'm running with Xdrive.

Vorsteiner

Front 22x10 +35 w/ 5mm spacers and 295/30/22
Rear: 22x11 +30 w/ 12mm spacers and 335/25/22
Lowered on H&R Spring

Ratio diameter difference between front and rear is 1.4%. Been running this for a few month. No drive train issues or code thrown. Wheels are flush to the fender with the spaces. Without spacers, it will tuck inside the fenders. Tires are flush with the rim. Doesn't stretch.

That looks mint and really helpful. When the car hits a dip, does the tire jam into the outer wheel well or clear?

That looks to be the perfect set up if you lower the vehicle and has more sidewall on the tire than I expected. I'm more than likely not going to lower mine, so the thin sidewalls will look goofy. Good to know they sit flush with the following math:

Front: 97mm of poke
Rear: 121.7 mm of poke

My new issue now is the tire manufactures require a minimum wheel width spec of 9.5" to 11" for a 285/35r22 or 295/30r22. Most aftermarket wheels I've found are 22x9. Does anyone have any experience of fitting those 2 tire sizes to a 22x9?

[M302_imola]

Originally Posted by diesel733

I'm running with Xdrive.

Vorsteiner

Front 22x10 +35 w/ 5mm spacers and 295/30/22
Rear: 22x11 +30 w/ 12mm spacers and 335/25/22
Lowered on H&R Spring

Ratio diameter difference between front and rear is 1.4%. Been running this for a few month. No drive train issues or code thrown. Wheels are flush to the fender with the spaces. Without spacers, it will tuck inside the fenders. Tires are flush with the rim. Doesn't stretch.

Looks badass! Thanks for the pics and the reassurance that those tire sizes aren't giving you any issues thus far (knock on wood). With steering wheel at full lock do you rub at all?

I haven't priced the Toyo's yet. Mind letting me know how much you spent on tires? Thanks

[diesel733]

Originally Posted by M302_imola

Looks badass! Thanks for the pics and the reassurance that those tire sizes aren't giving you any issues thus far (knock on wood). With steering wheel at full lock do you rub at all?

I haven't priced the Toyo's yet. Mind letting me know how much you spent on tires? Thanks

The Toyo tires cost me $926. At full lock, no rubbing and it's lowered 1.5 inches.

[diesel733]

Originally Posted by texasrr

That looks mint and really helpful. When the car hits a dip, does the tire jam into the outer wheel well or clear?

That looks to be the perfect set up if you lower the vehicle and has more sidewall on the tire than I expected. I'm more than likely not going to lower mine, so the thin sidewalls will look goofy. Good to know they sit flush with the following math:

Front: 97mm of poke
Rear: 121.7 mm of poke

My new issue now is the tire manufactures require a minimum wheel width spec of 9.5" to 11" for a 285/35r22 or 295/30r22. Most aftermarket wheels I've found are 22x9. Does anyone have any experience of fitting those 2 tire sizes to a 22x9?

285 will look flush to the rim with a 22x9 setup

[M302_imola]

Originally Posted by diesel733

The Toyo tires cost me $926. At full lock, no rubbing and it's lowered 1.5 inches.

Not a bad price but I can get the Atturo's for around $550. Yes, I'm a cheap ass

[texasrr]

Originally Posted by diesel733

285 will look flush to the rim with a 22x9 setup

Do you have a picture of the gap between the tire and wheel well at full lock and the space between the tire and the metal wishbone piece?

[diesel733]

Originally Posted by M302_imola

Not a bad price but I can get the Atturo's for around $550. Yes, I'm a cheap ass

HAHA

[diesel733]

Originally Posted by texasrr

Do you have a picture of the gap between the tire and wheel well at full lock and the space between the tire and the metal wishbone piece?

Originally Posted by texasrr

Do you have a picture of the gap between the tire and wheel well at full lock and the space between the tire and the metal wishbone piece?

Can't get my camera in that deep

[texasrr]

Decided to risk it and it really paid off for what I was looking for. Below is the set up:

TSW Mosports
22x10.5 ET35 with total poke 98.4 mm. Tires - 285/35R22 29.88" tall
22x11 ET25 with total poke 114.7 mm. Tires - 295/35R22 30.12" tall

The delta on this is less than the common combo of 295/30r22 and 335/25r22. No issues with xDrive. In downtown Houston I needed the higher sidewall for rougher roads. The front wheel is a perfect fit and sits flush with the M Sport fenders. No rub at full lock going forward or in reverse. The rear could use another 8 MM to sit exactly flush, but they are wide. Based on what diesel733 has on the rear, 121 mm of total poke is ideal. These also fill up the wheel well without having to lower. Thanks for all the help guys!

[diesel733]

Originally Posted by texasrr

Decided to risk it and it really paid off for what I was looking for. Below is the set up:

TSW Mosports
22x10.5 ET35 with total poke 98.4 mm. Tires - 285/35R22 29.88" tall
22x11 ET25 with total poke 114.7 mm. Tires - 295/35R22 30.12" tall

The delta on this is less than the common combo of 295/30r22 and 335/25r22. No issues with xDrive. In downtown Houston I needed the higher sidewall for rougher roads. The front wheel is a perfect fit and sits flush with the M Sport fenders. No rub at full lock going forward or in reverse. The rear could use another 8 MM to sit exactly flush, but they are wide. Based on what diesel733 has on the rear, 121 mm of total poke is ideal. These also fill up the wheel well without having to lower. Thanks for all the help guys!

Originally Posted by texasrr

Decided to risk it and it really paid off for what I was looking for. Below is the set up:

TSW Mosports
22x10.5 ET35 with total poke 98.4 mm. Tires - 285/35R22 29.88" tall
22x11 ET25 with total poke 114.7 mm. Tires - 295/35R22 30.12" tall

The delta on this is less than the common combo of 295/30r22 and 335/25r22. No issues with xDrive. In downtown Houston I needed the higher sidewall for rougher roads. The front wheel is a perfect fit and sits flush with the M Sport fenders. No rub at full lock going forward or in reverse. The rear could use another 8 MM to sit exactly flush, but they are wide. Based on what diesel733 has on the rear, 121 mm of total poke is ideal. These also fill up the wheel well without having to lower. Thanks for all the help guys!

Looks great. Looks mean