245x45x19 wheels

LSX5 · 10-10-2018, 09:00 PM

Think of buying a winter set of wheels from a friend. The tires that come with the rims are 245x45x19. I know that 2013 535xi that comes with 19" rims comes with 245x40x19.
will that extra 5mm thickness throw anything off?

cdmulders · 10-10-2018, 11:37 PM

As long as you are not lowered, you won't have a problem with 245/45/19 tires on 19" wheels. I ran oversized 245/50/18 winter tires for several seasons on my 535xi with no problems.

As an aside, the difference is more than 5mm. The 45 (or 40 for stock 19" tire) is the ratio of the sidewall thickness relative to the tread width. A 45 tire means that the sidewall height is 45% of the tread width. Switching from a 40 to a 45 tire increases the sidewall by over 12mm, with a total tire diameter increase of about 1". Check out this tire size comparison link for making a comparison:

LSX5 · 10-11-2018, 07:20 AM

Quote:

Originally Posted by cdmulders

As long as you are not lowered, you won't have a problem with 245/45/19 tires on 19" wheels. I ran oversized 245/50/18 winter tires for several seasons on my 535xi with no problems.

As an aside, the difference is more than 5mm. The 45 (or 40 for stock 19" tire) is the ratio of the sidewall thickness relative to the tread width. A 45 tire means that the sidewall height is 45% of the tread width. Switching from a 40 to a 45 tire increases the sidewall by over 12mm, with a total tire diameter increase of about 1". Check out this tire size comparison link for making a comparison:

Thank you very much for the reply.

Beemerjunkie · 01-29-2019, 07:54 PM

Did you go with the 245/45/19?

How do you like the drive?

Also interested in the tire pressures you used?

Thanks

LSX5 · 01-29-2019, 10:01 PM

Quote:

Originally Posted by Beemerjunkie

Did you go with the 245/45/19?

How do you like the drive?

Also interested in the tire pressures you used?

Thanks

did not get it

BlueSander · 01-30-2019, 09:21 PM

I have a feeling 245 is a bit too narrow for our 19" wheels. Whenever I accidentally get too close to the curve, the wheels take the hit. Have anyone tried 255 instead?

Beemerjunkie · 02-01-2019, 07:01 PM

245/40r19 were the stock all seasons I’ve had since I got the car in 2011. Never had the curb problem.

I’ve had the 245/45r19 for 2-3 days and love them for why I wanted them. Definitely not as sporty as the all seasons but MUCH better on these crappy NY winter roads. I do try to dodge every little pothole or crack. They are also a lot more quiet than the all seasons.

Let’s see how they hold up in snow.

10-10-2018, 09:00 PM	#1
LSX5 Second Lieutenant 32 Rep 204 Posts Drives: 2012 X5 35d Join Date: Aug 2014 Location: CT iTrader: (1)	245x45x19 wheels Think of buying a winter set of wheels from a friend. The tires that come with the rims are 245x45x19. I know that 2013 535xi that comes with 19" rims comes with 245x40x19. will that extra 5mm thickness throw anything off?
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10-10-2018, 11:37 PM	#2
cdmulders Captain 327 Rep 697 Posts Drives: 2013 535xi Join Date: Dec 2009 Location: Nanoose Bay, BC iTrader: (0) Garage List 2013 BMW 535i xDrive [0.00] 2010 E89 Z4 sDrive35i [8.00]	As long as you are not lowered, you won't have a problem with 245/45/19 tires on 19" wheels. I ran oversized 245/50/18 winter tires for several seasons on my 535xi with no problems. As an aside, the difference is more than 5mm. The 45 (or 40 for stock 19" tire) is the ratio of the sidewall thickness relative to the tread width. A 45 tire means that the sidewall height is 45% of the tread width. Switching from a 40 to a 45 tire increases the sidewall by over 12mm, with a total tire diameter increase of about 1". Check out this tire size comparison link for making a comparison: __________________ 2013 535xi, Carbon Black, beige interior, M Sport package, HUD, DDC & ARS, ACS springs, Kelleners wheels 2010 Z4 35i, Crimson Red, beige interior, 6sp manual, Adapative Suspension 2000 528i, Cosmo Black, beige interior, Sport package (retired)
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01-29-2019, 07:54 PM	#4
Beemerjunkie New Member 5 Rep 10 Posts Drives: 2011 535xi M-Sport Join Date: Feb 2017 Location: New York iTrader: (0)	Did you go with the 245/45/19? How do you like the drive? Also interested in the tire pressures you used? Thanks
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01-30-2019, 09:21 PM	#6
BlueSander First Lieutenant 59 Rep 359 Posts Drives: M550i Join Date: Mar 2008 Location: CT iTrader: (0)	I have a feeling 245 is a bit too narrow for our 19" wheels. Whenever I accidentally get too close to the curve, the wheels take the hit. Have anyone tried 255 instead?
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02-01-2019, 07:01 PM	#7
Beemerjunkie New Member 5 Rep 10 Posts Drives: 2011 535xi M-Sport Join Date: Feb 2017 Location: New York iTrader: (0)	245/40r19 were the stock all seasons I’ve had since I got the car in 2011. Never had the curb problem. I’ve had the 245/45r19 for 2-3 days and love them for why I wanted them. Definitely not as sporty as the all seasons but MUCH better on these crappy NY winter roads. I do try to dodge every little pothole or crack. They are also a lot more quiet than the all seasons. Let’s see how they hold up in snow.
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