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[#] Wed Jun 09 2021 12:15:24 EDT from LoanShark

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I'm going to assume you've got the Adaptive suspension... Bilstein makes replacement dampers, which are drop-in replacements and compatible with the electronic control. Might be worth looking into.

Beyond that, it's custom springs.

[#] Wed Jun 09 2021 13:40:03 EDT from ParanoidDelusions

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I also considered a rear deck spoiler to add a little more downforce on the rear wheels. 

I find it interesting that this person describes almost exactly the same sensation: 

https://www.bimmerfest.com/threads/m235i-rwd-convertible-2016-tire-and-handling-issues.1387467/#post-13557781


Wed Jun 09 2021 12:15:24 EDT from LoanShark

I'm going to assume you've got the Adaptive suspension... Bilstein makes replacement dampers, which are drop-in replacements and compatible with the electronic control. Might be worth looking into.

Beyond that, it's custom springs.

 



[#] Wed Jun 09 2021 14:16:24 EDT from LoanShark

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if the car was originally ordered with all seasons, it will have 225 section width tires all around. if it was ordered with performance tires, it will be 245 in the rear. might make a difference.

[#] Wed Jun 09 2021 14:19:50 EDT from LoanShark

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ordering guide has all the original specs on wheel/tire options that were available from factory--

https://www.2addicts.com/forums/showthread.php?t=1132609

[#] Wed Jun 09 2021 15:15:44 EDT from Nurb432

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All these fancy cars.

 

My little car, does not even have power steering ( which is fine by me actually... ).   Tho it does have power windows, which is nice as you cant reach over to the other side for manual.  You have a huge center console in the way, that hides the gas tank. Keeps weight in the middle. Be dumb to have mid engine just to screw it up that way. 



[#] Wed Jun 09 2021 19:11:02 EDT from ParanoidDelusions

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It was originally purchased in Georgia with all seasons - so it does have 225s. 

So... maybe I'll start with staggered rubber with 245s in the rear. 

Got any ideas for a source where I could pick up two rear 245 wheels matching my factory 225s in the front? I like the look of them. 

 

Wed Jun 09 2021 14:16:24 EDT from LoanShark

if the car was originally ordered with all seasons, it will have 225 section width tires all around. if it was ordered with performance tires, it will be 245 in the rear. might make a difference.

 



[#] Thu Jun 10 2021 12:02:32 EDT from LoanShark

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Got any ideas for a source where I could pick up two rear 245 wheels
matching my factory 225s in the front? I like the look of them. 

Looks like you've probably got style 436M, 18x7.5 on all four corners.
There are two options for this wheel style - regular, or orbit grey.

For the rear, you want the 18x8.0 version of this wheel style.

Last time I bought a set of 4 BMW wheels (for my winter tire setup) I just did a junkyard search on car-part.com and ended up driving about 40 minutes to a place on Long Island that had the identical style to my stock setup.

[#] Thu Jun 10 2021 14:10:01 EDT from ParanoidDelusions

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I think I most likely have code 2TR style 436M (front/rear 18.75 225/40 R18) factory wheels (and I'd need to find a set of factory code 2PG, style 436M rear wheels if I wanted to go 18x8, 245/35 R18 staggered while keeping my factory front wheels.

The tires are Perelli Cinturato P7 all season run flats 225/40R18s all around. 

How much did the set of 4 cost you from the junkyard?  

Thu Jun 10 2021 12:02:32 EDT from LoanShark
Got any ideas for a source where I could pick up two rear 245 wheels
matching my factory 225s in the front? I like the look of them. 

Looks like you've probably got style 436M, 18x7.5 on all four corners.
There are two options for this wheel style - regular, or orbit grey.

For the rear, you want the 18x8.0 version of this wheel style.

Last time I bought a set of 4 BMW wheels (for my winter tire setup) I just did a junkyard search on car-part.com and ended up driving about 40 minutes to a place on Long Island that had the identical style to my stock setup.

 



[#] Thu Jun 10 2021 14:46:00 EDT from LoanShark

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How much did the set of 4 cost you from the junkyard?  

They were not cosmetically quite perfect -- so it was $100 a pop, or $400 total.

[#] Thu Jun 10 2021 14:47:58 EDT from LoanShark

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2021-06-10 14:46 from LoanShark
How much did the set of 4 cost you from the junkyard?

They were not cosmetically quite perfect -- so it was $100 a pop, or

$400 total.



Maybe I should add - these were 17"ers from a 2014 model year, so maybe not as pricey as some of the 18's.

[#] Fri Jun 11 2021 20:42:39 EDT from ParanoidDelusions

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You've led me down a rabbit hole that is going to be expensive. 

Did you know that if you opted for the 225 All Seasons all around on a M235i the electronic limit locked into the ECU was 130 MPH? 

Neither did I. 

Really the only way to fix it is a custom ECU tune. 

So... in addition to two new wheels, and probably Michelin Super Sport rubber all around, I'm also probably going to have to get an ECU flash. 


I've reached out to a local tuner. I suppose it is going to probably run less than $2000 and it'll probably bump me to somewhere around 360 HP - right around an M2. 

I'm wondering what kind of complications this is going to lead to. I like to run MOSTLY stock. But... what the hell. I suspect an intercooler will probably be next. 

And then smogging might get interesting in the future. 

 



[#] Fri Jun 11 2021 21:43:01 EDT from Nurb432

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Nice of them not to allow you to have what you bought. 

Fri Jun 11 2021 08:42:39 PM EDT from ParanoidDelusions


Did you know that if you opted for the 225 All Seasons all around on a M235i the electronic limit locked into the ECU was 130 MPH? 

 



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