how big can you go on middle tire size number on 19's

gbux · 08-07-2018, 05:15 AM

so id love to have 19's with 245/40/r19 front and rear (xdrive). I want as much sidewall as possible to make the ride comfortable and to give me as much of a warning against rim damage as i can get.

is 40 too big on a 435 with 19's?

Ok ok I was looking at my car this morning and I think 18 isn't terrible either lol. I guess in that note is 245 /45 too wide?

wdeerfield · 08-07-2018, 06:58 AM

40 is too tall at 245 as it makes it 26.7" tall. I am currently running 235/40/19 and they are 26.3 compared to the stock 26 and its enough. They look meaty to me and provide rim protection. Alternatively you could go wider as some members are running 255s square on 8.5" rims

gbux · 08-07-2018, 07:04 AM

Quote:

Originally Posted by wdeerfield

40 is too tall at 245 as it makes it 26.7" tall. I am currently running 235/40/19 and they are 26.3 compared to the stock 26 and its enough. They look meaty to me and provide rim protection. Alternatively you could go wider as some members are running 255s square on 8.5" rims

Sorry so you said 40 is too tall for 245, but some people go 255? I guess they bump down to 35 for 245 and wider?

wdeerfield · 08-07-2018, 07:33 AM

yes. exactly. 255/35/19 is 26.03" tall. Going to a 245/35/19 is more in line with the e9x platform and there are members here who do it to tuck tire or make the car lower. Those would be 25.75" tall but would give less sidewall and more wheel well gap. I run 235/45/18 on winter tires square and love the look and those are also 26.33" tall

gbux · 08-07-2018, 07:56 AM

255 isnt too wide, especially for the front? Btw, I do like the way yours look. its meaty as hell and looks stock

alohasurftoad · 08-07-2018, 11:35 AM

https://f30.bimmerpost.com/forums/sh...ght=haywood187

here is 245/40/19. although @haywood187 has no issues, i have read a small percentage of posts where the outer shoulder rubbed the fenderwell liner while turning for some. the cause may have been offset, broad tire shoulder, variance in each cars build or combination. running taller heavier tires slows your acceleration as well, albeit very slightly. i find the look too beefy and approaching "rally cross'ish", from some angles.

personally, i try to stay at or near the factory diameter and feel if you want more sidewall run a smaller diameter wheel with tire appropriately sized tires. but in the end, to each everyone's own...

wdeerfield · 08-07-2018, 12:18 PM

Quote:

Originally Posted by alohasurftoad

i find the look too beefy and approaching "rally cross'ish", from some angles.

i agree. the front tires look like balloons with that offset and ride height

gbux · 08-07-2018, 04:40 PM

Unpopular opinion but I miss big tires. They rode great and if you hit the curb you didn't go through the 7 stages of grief. You just slapped on some tire shine and GG. Do low profile tires on 19s or 20s look great? Sure, but life happens.

alohasurftoad · 08-07-2018, 05:19 PM

255/35/19 is 10mm oversize on 8.5 and will provide more lateral protection if you're using the tires as feelers.

djmikey870 · 08-08-2018, 06:23 PM

These look super clean!
Can anyone help me and give me some options for staggered 19x8.5 fronts and 19x9.5 rears both offset are 35. Not sure what size tires I should get.

08-07-2018, 05:15 AM	#1
gbux Private 21 Rep 71 Posts Drives: 2018 M3 competition Join Date: Oct 2017 Location: New York iTrader: (0)	so id love to have 19's with 245/40/r19 front and rear (xdrive). I want as much sidewall as possible to make the ride comfortable and to give me as much of a warning against rim damage as i can get. is 40 too big on a 435 with 19's? Ok ok I was looking at my car this morning and I think 18 isn't terrible either lol. I guess in that note is 245 /45 too wide?
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08-07-2018, 06:58 AM	#2
wdeerfield A family of bimmers 2747 Rep 7,742 Posts Drives: '18 G01 X3M40i Join Date: Jan 2012 Location: Clifton Park, NY iTrader: (0)	40 is too tall at 245 as it makes it 26.7" tall. I am currently running 235/40/19 and they are 26.3 compared to the stock 26 and its enough. They look meaty to me and provide rim protection. Alternatively you could go wider as some members are running 255s square on 8.5" rims __________________ 2018 PB/Black G01 X3M40i \| 699M \| ZDA \| ZPP \| ZPX \| Maxton front lip \| X3M vents \| 15mm Spacers \| Diamond G20 style grills
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08-07-2018, 07:33 AM	#4
wdeerfield A family of bimmers 2747 Rep 7,742 Posts Drives: '18 G01 X3M40i Join Date: Jan 2012 Location: Clifton Park, NY iTrader: (0)	yes. exactly. 255/35/19 is 26.03" tall. Going to a 245/35/19 is more in line with the e9x platform and there are members here who do it to tuck tire or make the car lower. Those would be 25.75" tall but would give less sidewall and more wheel well gap. I run 235/45/18 on winter tires square and love the look and those are also 26.33" tall __________________ 2018 PB/Black G01 X3M40i \| 699M \| ZDA \| ZPP \| ZPX \| Maxton front lip \| X3M vents \| 15mm Spacers \| Diamond G20 style grills
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08-07-2018, 07:56 AM	#5
gbux Private 21 Rep 71 Posts Drives: 2018 M3 competition Join Date: Oct 2017 Location: New York iTrader: (0)	255 isnt too wide, especially for the front? Btw, I do like the way yours look. its meaty as hell and looks stock
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08-07-2018, 11:35 AM	#6
alohasurftoad Brigadier General 3078 Rep 4,327 Posts Drives: 440i gran coupe w/mppsk Join Date: Apr 2015 Location: hawaii iTrader: (0)	https://f30.bimmerpost.com/forums/sh...ght=haywood187 here is 245/40/19. although @haywood187 has no issues, i have read a small percentage of posts where the outer shoulder rubbed the fenderwell liner while turning for some. the cause may have been offset, broad tire shoulder, variance in each cars build or combination. running taller heavier tires slows your acceleration as well, albeit very slightly. i find the look too beefy and approaching "rally cross'ish", from some angles. personally, i try to stay at or near the factory diameter and feel if you want more sidewall run a smaller diameter wheel with tire appropriately sized tires. but in the end, to each everyone's own...
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08-07-2018, 04:40 PM	#8
gbux Private 21 Rep 71 Posts Drives: 2018 M3 competition Join Date: Oct 2017 Location: New York iTrader: (0)	Unpopular opinion but I miss big tires. They rode great and if you hit the curb you didn't go through the 7 stages of grief. You just slapped on some tire shine and GG. Do low profile tires on 19s or 20s look great? Sure, but life happens.
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08-07-2018, 05:19 PM	#9
alohasurftoad Brigadier General 3078 Rep 4,327 Posts Drives: 440i gran coupe w/mppsk Join Date: Apr 2015 Location: hawaii iTrader: (0)	255/35/19 is 10mm oversize on 8.5 and will provide more lateral protection if you're using the tires as feelers.
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08-08-2018, 06:23 PM	#10
djmikey870 New Member 2 Rep 5 Posts Drives: 2013 BMW 328i Msport Join Date: Aug 2018 Location: Bay Area iTrader: (0)	These look super clean! Can anyone help me and give me some options for staggered 19x8.5 fronts and 19x9.5 rears both offset are 35. Not sure what size tires I should get.
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