225/40 18 265/35 18 xdrive

solufotebi · 02-20-2015, 11:54 PM

Just want to know if its possible for me to run 225/40 18 fronts and 265/35 18 rears on an xdrive 335. I believe the rolling diameter is under 1% but just want to make sure. Has anyone tried this setup?

MonacoBlueE90 · 02-21-2015, 12:00 AM

Yes it is possible and the difference is 0.8%.

gtaccord · 02-21-2015, 07:38 PM

I run this currently for my winter setup. Works ok, no codes or faults but I would recommend against it. I do get some driveline surging and I think it is due to the front tires being smaller diameter than the rear. Stick with a stock like setup with front larger than the rear but within 1%.

solufotebi · 02-21-2015, 10:41 PM

Quote:

Originally Posted by gtaccord

I run this currently for my winter setup. Works ok, no codes or faults but I would recommend against it. I do get some driveline surging and I think it is due to the front tires being smaller diameter than the rear. Stick with a stock like setup with front larger than the rear but within 1%.

What is driveline surging? do u feel these at high speeds or throughout the ride?

Aashenfox · 02-22-2015, 11:21 AM

I also have a larger rear (235/35/19, 275/30/19), my overall diameter difference is 0.6%, but I swear my car is a little more tail happy than it should be and I swear this is why. I will be changing next time to the factory recommended 225/35/19, 255/30/19, when I fit my new black ch-rs with new super sports, in the process restoring the front bias AND further reducing the difference (0.4%).

gtaccord · 02-22-2015, 01:06 PM

Quote:

Originally Posted by Aashenfox

I also have a larger rear (235/35/19, 275/30/19), my overall diameter difference is 0.6%, but I swear my car is a little more tail happy than it should be and I swear this is why. I will be changing next time to the factory recommended 225/35/19, 255/30/19, when I fit my new black ch-rs with new super sports, in the process restoring the front bias AND further reducing the difference (0.4%).

235/35 and 275/30 19s are almost exactly the same size. Way less than 0.6%. Actual difference is 0.08%. I would actually consider that to be the ideal size.

gtaccord · 02-22-2015, 01:08 PM

Quote:

Originally Posted by solufotebi

What is driveline surging? do u feel these at high speeds or throughout the ride?

It's mostly high speed with the cruise control on. It may just be the snow tires but I had the same setup on my rwd 335 and never had an issue.

Driveline surge feels like the car speeds up and then holds itself back over and over. It is very subtle. Some people would probably never notice.

solufotebi · 02-22-2015, 02:39 PM

Quote:

Originally Posted by gtaccord

It's mostly high speed with the cruise control on. It may just be the snow tires but I had the same setup on my rwd 335 and never had an issue.

Driveline surge feels like the car speeds up and then holds itself back over and over. It is very subtle. Some people would probably never notice.

do you have a picture of you ride with this setup? or does anyone? I've been searching the forums and I cant seem to find a pic with that exact setup.

Aashenfox · 02-23-2015, 04:23 AM

Quote:

Originally Posted by gtaccord

235/35 and 275/30 19s are almost exactly the same size. Way less than 0.6%. Actual difference is 0.08%. I would actually consider that to be the ideal size.

You're right. I suppose that's what you get for believing what you read without questioning it.

The stagger charts are obviously wrong then. I'll go post in the thread...

Gary@TireRack · 02-23-2015, 08:04 AM

Quote:

Originally Posted by gtaccord

235/35 and 275/30 19s are almost exactly the same size. Way less than 0.6%. Actual difference is 0.08%. I would actually consider that to be the ideal size.

+1

gtaccord · 02-23-2015, 05:16 PM

Quote:

Originally Posted by solufotebi

do you have a picture of you ride with this setup? or does anyone? I've been searching the forums and I cant seem to find a pic with that exact setup.

I might be able to get you one. Traveling for the rest of the week.

Aashenfox · 02-24-2015, 04:32 AM

OK, worth mentioning that different tires are different. lol.

I've seen evidence that some tires have as much as 0.6% difference and others in this size have literally zero difference (DWS and RE026 respectively), so it really comes down to the tire.

solufotebi · 03-05-2015, 02:50 PM

Quote:

Originally Posted by Gary@TireRack

+1

Quick question Gary, I have style 189's on my 335 xdrive if I wanted to put 265/35 on the rears would that be ok? knowing that the rear is 8.5?

bimmer74 · 03-05-2015, 06:05 PM

I think 265/35R18 requires at least 9" wheel width.

02-20-2015, 11:54 PM	#1
solufotebi Private First Class 11 Rep 122 Posts Drives: '10 BMW 335i XDrive Join Date: Feb 2014 Location: DC Area iTrader: (1)	225/40 18 265/35 18 xdrive Just want to know if its possible for me to run 225/40 18 fronts and 265/35 18 rears on an xdrive 335. I believe the rolling diameter is under 1% but just want to make sure. Has anyone tried this setup?
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02-21-2015, 12:00 AM	#2
MonacoBlueE90 Colonel 163 Rep 2,823 Posts Drives: BMW E90 320D Half-LCI Join Date: Jan 2012 Location: Europe iTrader: (0)	Yes it is possible and the difference is 0.8%. __________________
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02-21-2015, 07:38 PM	#3
gtaccord Major 56 Rep 1,464 Posts Drives: 2009 BMW 335xi Join Date: Feb 2012 Location: Maryland iTrader: (7) Garage List 2009 BMW 335i xdrive [0.00]	I run this currently for my winter setup. Works ok, no codes or faults but I would recommend against it. I do get some driveline surging and I think it is due to the front tires being smaller diameter than the rear. Stick with a stock like setup with front larger than the rear but within 1%.
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02-22-2015, 11:21 AM	#5
Aashenfox Captain 128 Rep 664 Posts Drives: 08 E92 335xi 6AT Join Date: Jan 2015 Location: Brit in Greece iTrader: (0)	I also have a larger rear (235/35/19, 275/30/19), my overall diameter difference is 0.6%, but I swear my car is a little more tail happy than it should be and I swear this is why. I will be changing next time to the factory recommended 225/35/19, 255/30/19, when I fit my new black ch-rs with new super sports, in the process restoring the front bias AND further reducing the difference (0.4%).
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02-24-2015, 04:32 AM	#12
Aashenfox Captain 128 Rep 664 Posts Drives: 08 E92 335xi 6AT Join Date: Jan 2015 Location: Brit in Greece iTrader: (0)	OK, worth mentioning that different tires are different. lol. I've seen evidence that some tires have as much as 0.6% difference and others in this size have literally zero difference (DWS and RE026 respectively), so it really comes down to the tire.
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03-05-2015, 06:05 PM	#14
bimmer74 Second Lieutenant 7 Rep 212 Posts Drives: 2011 335i xDrive Sedan Join Date: Mar 2008 Location: Massachusetts iTrader: (3)	I think 265/35R18 requires at least 9" wheel width. __________________ 2011 335i xDrive Sedan / 6MT / M-Sport / PPK1
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