Urgent help required plzzz!! Alloys changed 22”

[Shin_85]

Hi all this is my first post so sorry in advance for any mistakes or if the question has a very simple answer but I tried to search and couldn’t find anything. I never had had to post due to this site always being so helpful and have always solved any issues.

Also sorry about the loooong explanation but want to try get everything in and I realllyyyy want this sorted! :-(

My car, BMW X5 f15 2015 40d msport

So the issue I have is with the change of alloys. I changed my alloys from 20” to 22” hamann multispoke style staggered alloys. New alloy size are 22x10 rear 22x11.5. I absolutely love the look but can’t get these alloys to work arghhhhhh!

Tyres :front roadking 285/35/22 (x2) rear lexani 335/25/22 (x2) not run flats

Firstly I had 285/35/22 and rear 335/25/22 which the garage said this will be fine but I started getting very heavy shaking and uphill it felt like I was towing a house with no pickup. The gear changes were very rough whereas before the car drove beautiful. On the motorway I can’t explain how bad it was car was going left to right by it’s self pulling all over the place glad to say made it of the motorway in one piece! I took it to local Bmw specialist and they said best thing to do is put the old wheels on then see if problem persists, which it didn’t it was driving spot ok again. So the technician said that rules out any gearbox transfer case issues and can only be due to the alloys or tyres. He said this car if very sensitive to change in rotation diameters.

So doing research on here I noticed that the tyre size was wrong and should have had 295/30/22 on the front. As I had spent a fair bit I thought I don’t want to waste money and have bought another set of tyres to just be sitting in my garden brand new, so I order some second hand ones and if they worked would buy them brand new once worn out next time around.

These tyres I brought were Pirelli scorpion zero 295/30/22 (x2) part worn

After the front two were changed and the rear tyres kept the same the car was driving a lot better, and from cold driving lovely! No issues.

After 10mins of driving the gear change issue came back but nowhere near as bad as before and only happens here and there. On motorway it drives fine mainly lower gear changes it’s like a tugging jerking feeling. The pickup seems fine and up hill aswell, before was a joke the symptoms the car was producing. So I feel I’m not far of sorting out the problem.

My question is finally does anyone know what the issue is? as I see any people change to 22” and haven’t had no issues on this site.

Please please can someone help!!

Thanks
Shin

[parkstr8]

Hi - While I don't have an exact answer for this question, on this car...I can share a little bit of experience. I have upsized wheels many, many times in my past. Some worked out well, others were problematic and a pain in the arse.

I just upgraded from 20's to 21's. Usually the stock tires and wheels are the best when it comes to moderate drivability as they were designed/chosen for it by application.

On my new 21's - my car has a completely different ride. I stayed with the stock 21 recommended tire size - but the reduction in sidewall height can really be felt. With 22's it will be even more so. I went from run flats to Michelin non RFT - thinking it would be a better ride. It's actually a bit of a trade off due to the increase in wheels size and shrinkage in sidewall.

Also - depending on your roads, and the tire choice, the back and forth sway can sometimes be tram-lining - its where the tire is picking up the grooves or inconsistencies in the road and transmitting it back to thru the suspension.

On rare occasions - there can be an issue with the actual belts in the tires. If they have sat too long, the steel belts can get deformed.

I am assuming the wheels were torqued properly and not loose.

Hopefully some one else can step in with more helpful info.

[Shin_85]

Thanks for the reply, the alloys are torqued properly, I have also changed my alloys I think on every car I had and never had an issue.

Yes the best and you can’t beat are the original alloys as these have been designed from factory but I’ve seen and researched on here beforehand and people don’t seem to have an issue so thought would be fine.

As is a lot better on these two tyres I got changed on the front I’m thinking the only issue now is that the tyres ain’t all the same

[turboawd]

Are the wheel bores the same size as the hubs?
Got pics?

[unluky]

Originally Posted by turboawd

Are the wheel bores the same size as the hubs?
Got pics?

THIS! I though the same thing - changing wheel size can't be it - has to be a fitament or tire issue.

[parkstr8]

I forgot about bore - bore is often times the issue. GREAT CATCH!

Originally Posted by turboawd

Are the wheel bores the same size as the hubs?
Got pics?

[richiiuk]

Hi you would be better getting 285/30/22 for the front they have a circumference of 2292.7mm which suits the 335/25/22 rears you have which have a circumference of 2281.7mm, the 295/30/22 are 2311.6mm and your original 285/35/22 are 2382.3mm. Basically the front and rear tyre circumferences need to be as close as possible to each other as any difference is taken up by slippage in the multiplate clutchpack in the transfer case or in cases where grip is low the larger diameter wheel will slip or the smaller diameter wheel hop depending on which had the most grip. Eventually if the difference is too great it will kill your transfer case or a diff(google drivetrain windup). This can also be amplified by using differnt makes/types of tyres on each axle and new tyres on one axle and old on the others. Basically anything that creates differences in the circmference and grip levels between axles.
285 is the width of tyre in mm
30 is the %height of the sidewall in relation to the width and will need multiplying by 2 ie 285*0.30*2
22 is the wheel(not tyre) diameter in inches(* by 25.4 to convert to mm)
therefore circumference = ((285*0.3*2)+(22*25.4))*pie. I have used circumference as this is the distance the wheel in question will travel in a straight line for one full rotation of the wheel.
Sorry if you already new this.

ps I have not checked my calcs, have had a few beers and its after midnight....

[CT335xi]

Your front tire is to tall like mentioned above, need to run 30 series in front either 285 or 295, that transfer case is not liking the big difference front your front and rear overall tire diameters.

[CanadianLurker]

I've found this web calculator site to be quite useful for seeing the effects of changing wheels, tires, or both.

https://www.wheel-size.com

They show the compatibilities + variances and they also show what's going to change with clearances and geometry. You can also do your own custom comparisons.

[gqgambler]

Don't run mismatched tires as the difference in tread can affect ride.
Make sure tires were balance and road force tested appropriately.
When you upsized to 22" did you have an alignment done?
295/30-22 front and 335/25-22 rear should work as many people run that config on teh f85s.
and don't forget about a manufacturing defect within the tire itself.

[richiiuk]

Originally Posted by CanadianLurker

I've found this web calculator site to be quite useful for seeing the effects of changing wheels, tires, or both.

https://www.wheel-size.com

They show the compatibilities + variances and they also show what's going to change with clearances and geometry. You can also do your own custom comparisons.

That calculator is very handy, beats doing the maths.
Nice one

[E90MYKE]

I haven't had problems with my X5 with 21", but I had a similar issue with my e90. I took it for a tire rotation and when I picked it up I couldn't safely drive it. It was pulling left and right like you described. It turns out they mounted one of the tires in the wrong direction. It was pulling left and right and jerking, I guess because the car thought the wheel as slipping. I wouldn't have imagined something so simple made the car unable to drive.

[sj22]

Here is my advice, forget the 22s and stick with a square set up to see if your issues fully resolve, because if everything else is okay, this may be a sign of a failing differential which exaggerates the difference in rotations. On staggered sizes even a 2/32 unequal wear can feel much more so you really have to test with a square setup. I had the same happened on my 2013 7 series on a staggered OEM setup and ended up trading it in within a week.

[Shin_85]

Thanks for the advice guys, really appreciate it. So if I had not already bought the alloys I would more likely do that but as I have them now and cannot be returned I’m going to try make this work as others have 22” and have no issues.

What do you guys think about changing all tyres to contentials contact 6 as the only other advice I’ve had is my tyre setup would be a big factor. I have new lexani 335/25/22 on rear and front 295/30/22 but these were bought part worn with around 5mm tread.

I think all tyres have to be within same tread depth I think the difference in tread is to much and have to get full set of quality tyres. Continental tyres are ones bmw use aswell

[AECDY]

Originally Posted by Shin_85

Thanks for the advice guys, really appreciate it. So if I had not already bought the alloys I would more likely do that but as I have them now and cannot be returned I’m going to try make this work as others have 22” and have no issues.

What do you guys think about changing all tyres to contentials contact 6 as the only other advice I’ve had is my tyre setup would be a big factor. I have new lexani 335/25/22 on rear and front 295/30/22 but these were bought part worn with around 5mm tread.

I think all tyres have to be within same tread depth I think the difference in tread is to much and have to get full set of quality tyres. Continental tyres are ones bmw use aswell

I think that might be your best shot. I had a friend that had the same issue when he replaced his back tires with brand new ones and the front where 5/32's.

If you like Pirellis email Nader at SDT, I recently purchase 295/30/22 and 335/25/22 from them.
Nader@sdtireandwheel. com

Good Luck

[kranckerx]

Originally Posted by Shin_85

Hi all this is my first post so sorry in advance for any mistakes or if the question has a very simple answer but I tried to search and couldn’t find anything. I never had had to post due to this site always being so helpful and have always solved any issues.

Also sorry about the loooong explanation but want to try get everything in and I realllyyyy want this sorted! :-(

My car, BMW X5 f15 2015 40d msport

So the issue I have is with the change of alloys. I changed my alloys from 20” to 22” hamann multispoke style staggered alloys. New alloy size are 22x10 rear 22x11.5. I absolutely love the look but can’t get these alloys to work arghhhhhh!

Tyres :front roadking 285/35/22 (x2) rear lexani 335/25/22 (x2) not run flats

Firstly I had 285/35/22 and rear 335/25/22 which the garage said this will be fine but I started getting very heavy shaking and uphill it felt like I was towing a house with no pickup. The gear changes were very rough whereas before the car drove beautiful. On the motorway I can’t explain how bad it was car was going left to right by it’s self pulling all over the place glad to say made it of the motorway in one piece! I took it to local Bmw specialist and they said best thing to do is put the old wheels on then see if problem persists, which it didn’t it was driving spot ok again. So the technician said that rules out any gearbox transfer case issues and can only be due to the alloys or tyres. He said this car if very sensitive to change in rotation diameters.

So doing research on here I noticed that the tyre size was wrong and should have had 295/30/22 on the front. As I had spent a fair bit I thought I don’t want to waste money and have bought another set of tyres to just be sitting in my garden brand new, so I order some second hand ones and if they worked would buy them brand new once worn out next time around.

These tyres I brought were Pirelli scorpion zero 295/30/22 (x2) part worn

After the front two were changed and the rear tyres kept the same the car was driving a lot better, and from cold driving lovely! No issues.

After 10mins of driving the gear change issue came back but nowhere near as bad as before and only happens here and there. On motorway it drives fine mainly lower gear changes it’s like a tugging jerking feeling. The pickup seems fine and up hill aswell, before was a joke the symptoms the car was producing. So I feel I’m not far of sorting out the problem.

My question is finally does anyone know what the issue is? as I see any people change to 22” and haven’t had no issues on this site.

Please please can someone help!!

Thanks
Shin

Shin_85

I’m having the same exact issue with my BMW X5 F15 right now as I just upgraded my 20” M sport wheels to an aftermarket 22” wheels. My wife got panic and so we pulled over right away. After inspecting everything, there’s actually no scraping, rubbing, popping tires, whatsoever happened. It was the unnecessary gearing and jerking for no reason all of a sudden was happening in our X5. My questions is, did it resolve your issues? Or you just go back to OEM M sports wheels.

Thanks,
Mark