What tires sizes should I choose?

overdrivex · 07-12-2016, 09:17 PM

Just thought id ask for some help on this. Im looking to get a little bit of stretch out of my tires. My current setup is this:

Front: 18x8.5 et35 225/40-18
Rear: 18x9 et31 255/35-18

What size tire should i put in the front and rear to balance out the amount of stretch and balance the effect it will have on the speedometer? Ive been searching and using all different tools online but havent been able to find anything that works so far. Im planning on getting some H&R coilovers for my XI and setting them pretty low.

blau808 · 07-13-2016, 10:19 PM

Not entirely sure what you're asking with regards to stretch and balance and its effect on the speedo. What affects the speedo is a different rolling diameter.

By stretch do you mean wider? You could go 235/265 if thats what you're looking for and still keep the same rolling diameter.

overdrivex · 07-13-2016, 10:26 PM

Quote:

Originally Posted by blau808

Not entirely sure what you're asking with regards to stretch and balance and its effect on the speedo. What affects the speedo is a different rolling diameter.

By stretch do you mean wider? You could go 235/265 if thats what you're looking for and still keep the same rolling diameter.

Sorry im new to this tire selection stuff.

What i meant was trying to put a slightly narrower tire onto the wheel to get the sidewalls of the wheel to poke out just a little bit...kinda like the pictures. I know its obviously not everyones cup of tea, but im just curious on how to get just a slight bit of that safely with my current wheels.

fmoua916 · 07-14-2016, 03:05 PM

Go 215 front and 245 rears u will get a lil stretch.

overdrivex · 07-14-2016, 04:20 PM

Quote:

Originally Posted by fmoua916

Go 215 front and 245 rears u will get a lil stretch.

Thank you! I was thinking 215/40 fronts and 245/35 rears?

AtlasM · 07-15-2016, 02:31 PM

Stretched tires kinda make me itch, they're like the automotive equivalent of wearing your hat like this:

overdrivex · 07-16-2016, 09:14 AM

Quote:

Originally Posted by AtlasM

Stretched tires kinda make me itch, they're like the automotive equivalent of wearing your hat like this:

Yeah, I know its not everyone's cup of tea, but I like a little stretch.

Fundguy1 · 07-16-2016, 09:17 AM

Just be careful the outer diameters are close. On an xI it'll screw up if they aren't even.

overdrivex · 07-16-2016, 09:21 AM

Quote:

Originally Posted by Fundguy1

Just be careful the outer diameters are close. On an xI it'll screw up if they aren't even.

Thanks! I'll make sure they're close in outer diameter.

07-12-2016, 09:17 PM	#1
overdrivex First Lieutenant 95 Rep 318 Posts Drives: 2001 Miata, 2006 Accord Join Date: Mar 2014 Location: Chester County, PA iTrader: (0)	Just thought id ask for some help on this. Im looking to get a little bit of stretch out of my tires. My current setup is this: Front: 18x8.5 et35 225/40-18 Rear: 18x9 et31 255/35-18 What size tire should i put in the front and rear to balance out the amount of stretch and balance the effect it will have on the speedometer? Ive been searching and using all different tools online but havent been able to find anything that works so far. Im planning on getting some H&R coilovers for my XI and setting them pretty low.
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07-13-2016, 10:19 PM	#2
blau808 Second Lieutenant 91 Rep 254 Posts Drives: E90 F31 X5 Join Date: Dec 2012 Location: PNW iTrader: (0)	Not entirely sure what you're asking with regards to stretch and balance and its effect on the speedo. What affects the speedo is a different rolling diameter. By stretch do you mean wider? You could go 235/265 if thats what you're looking for and still keep the same rolling diameter.
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07-14-2016, 03:05 PM	#4
fmoua916 First Lieutenant 72 Rep 385 Posts Drives: 335i Join Date: Sep 2015 Location: sacramento iTrader: (1)	Go 215 front and 245 rears u will get a lil stretch.
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07-15-2016, 02:31 PM	#6
AtlasM Captain 285 Rep 615 Posts Drives: '11 E92 335xi 6MT Join Date: Jun 2013 Location: Rockville, MD iTrader: (0) Garage List 2011 BMW 335i xDrive [8.00]	Stretched tires kinda make me itch, they're like the automotive equivalent of wearing your hat like this: Last edited by AtlasM; 07-15-2016 at 03:27 PM..
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07-16-2016, 09:17 AM	#8
Fundguy1 Major General 2033 Rep 8,339 Posts Drives: 335 e93 Join Date: Aug 2014 Location: Orlando, fl iTrader: (0)	Just be careful the outer diameters are close. On an xI it'll screw up if they aren't even.
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