Help with winter tyre sizing!

Nitronic · 10-12-2010, 09:44 AM

I was thinking of getting a pair of winter tyres on the OEM 19" wheels (245/35 and 265/35). I prefer hardcore Nokian tyres Hakkapeliitta R for snowy Finland but I have some problems with the sizes they offer:
235/35, 245/40 or 255/40 R19.

What do you think if I get 235/35 for front 8,5" wheels and 245/40 for the rear 9,5" wheels? This will make the front 1% smaller (diameter 647.1mm) and the rear 1,5% bigger (678.6mm). Difference 31,5mm in diameter and 3.41mph in speed.

Do you think this big of a difference will cause problems? Especially with the sensor systems? BMW Finland couldn't answer my question..

Blizzak LM-60 is another hardcore tyre with right sizes but unfortunately not sold in Europe...

Help appreciated very much, thanks!

2000gsr · 10-18-2010, 12:59 PM

I'm running 235/40/18 and 255/40/18 on oem 18's and no problems whatsoever.

dcstep · 10-18-2010, 01:15 PM

I'm sure that'll work. I'm running staggard on the 18" wheels.

You seem to know those tires. They're great for areas where snow stays on the ground for most of the winter. In places, like Denver, where it snows and then quickly clears and the roads dry, I'd recommend something like the Pirelli Soto Zeros.

Reedomn · 10-18-2010, 01:28 PM

Quote:

Originally Posted by 2000gsr

I'm running 235/40/18 and 255/40/18 on oem 18's and no problems whatsoever.

+1

deletedelete · 10-18-2010, 01:28 PM

Is there a need to run staggered on winters? I wanna run winters on 18s but square just to make it simple.

Reedomn · 10-18-2010, 01:55 PM

Staggared are necassary on OEM 18's....plus IMO it "looks" better.....

signes · 10-19-2010, 12:20 AM

Staggered is not necessary. Plenty of people run square setups on OEM 18s (I am one of them.) 245/40-18 Nokian Hakka R's. Best snows I've ever had.

deletedelete · 10-20-2010, 12:01 PM

So I can get 18x9.0 et20 square with 245/40/18? Is that the proper tire sizes for the rims?

Nitronic · 10-28-2010, 01:39 PM

Just wanted to inform you guys that I got the 235/35 and 245/40 on the OEM 19" wheels and they with run no problemos! Staggered looks ok and the 245 on the 9,5J rear wheel doesn't even look too streched!

Thank you guys and Ben (who posted on the other thread) for encouraging me to take my chances! Nokia R's rock, though haven't got any snow yet!

10-12-2010, 09:44 AM	#1
Nitronic New Member 2 Rep 8 Posts Drives: M3 Cabrio Join Date: Oct 2010 Location: Finland iTrader: (0)	Help with winter tyre sizing! I was thinking of getting a pair of winter tyres on the OEM 19" wheels (245/35 and 265/35). I prefer hardcore Nokian tyres Hakkapeliitta R for snowy Finland but I have some problems with the sizes they offer: 235/35, 245/40 or 255/40 R19. What do you think if I get 235/35 for front 8,5" wheels and 245/40 for the rear 9,5" wheels? This will make the front 1% smaller (diameter 647.1mm) and the rear 1,5% bigger (678.6mm). Difference 31,5mm in diameter and 3.41mph in speed. Do you think this big of a difference will cause problems? Especially with the sensor systems? BMW Finland couldn't answer my question.. Blizzak LM-60 is another hardcore tyre with right sizes but unfortunately not sold in Europe... Help appreciated very much, thanks!
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10-18-2010, 12:59 PM	#2
2000gsr First Lieutenant 18 Rep 396 Posts Drives: 2018 M4 Join Date: Aug 2008 Location: Toronto, ON iTrader: (0)	I'm running 235/40/18 and 255/40/18 on oem 18's and no problems whatsoever.
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10-18-2010, 01:15 PM	#3
dcstep Major General 1291 Rep 7,389 Posts Drives: '09 Cpe Silverstone FR 6MT Join Date: Nov 2008 Location: Colorado iTrader: (0) Garage List 2009 M3 [8.40]	I'm sure that'll work. I'm running staggard on the 18" wheels. You seem to know those tires. They're great for areas where snow stays on the ground for most of the winter. In places, like Denver, where it snows and then quickly clears and the roads dry, I'd recommend something like the Pirelli Soto Zeros. __________________ Flickr Photos Ucm, Inc.
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10-18-2010, 01:28 PM	#5
deletedelete Major General 361 Rep 5,873 Posts Drives: m Join Date: Nov 2008 Location: usa iTrader: (14) Garage List 2013 e92 M3 [0.00] 2011 e93 M3 (sold) [0.00] 2009 335xi (sold) [0.00]	Is there a need to run staggered on winters? I wanna run winters on 18s but square just to make it simple. __________________ ---> Click For xi/xDrive Suspension Compatibility List <---
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10-18-2010, 01:55 PM	#6
Reedomn Major 678 Rep 1,469 Posts Drives: Lambo Huracan/RR Velar/C8 Join Date: Feb 2008 Location: Minneapolis iTrader: (15)	Staggared are necassary on OEM 18's....plus IMO it "looks" better..... __________________ Lambo Huracan, Cherokee SRT, C8 on order. Sold- 458, GT3, f80 M3, e82 1M, f87 M2, e30 M3, e90 M3, e36 M3, e34 M5, e36 M3, e30 M3........
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10-19-2010, 12:20 AM	#7
signes Brigadier General 199 Rep 4,318 Posts Drives: 991 GT3 RS Join Date: Sep 2008 Location: Living at (almost...) 9k iTrader: (5)	Staggered is not necessary. Plenty of people run square setups on OEM 18s (I am one of them.) 245/40-18 Nokian Hakka R's. Best snows I've ever had. __________________ GT3 RS \| Desperately seeking the next great M car...
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10-20-2010, 12:01 PM	#8
deletedelete Major General 361 Rep 5,873 Posts Drives: m Join Date: Nov 2008 Location: usa iTrader: (14) Garage List 2013 e92 M3 [0.00] 2011 e93 M3 (sold) [0.00] 2009 335xi (sold) [0.00]	So I can get 18x9.0 et20 square with 245/40/18? Is that the proper tire sizes for the rims? __________________ ---> Click For xi/xDrive Suspension Compatibility List <---
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10-28-2010, 01:39 PM	#9
Nitronic New Member 2 Rep 8 Posts Drives: M3 Cabrio Join Date: Oct 2010 Location: Finland iTrader: (0)	Just wanted to inform you guys that I got the 235/35 and 245/40 on the OEM 19" wheels and they with run no problemos! Staggered looks ok and the 245 on the 9,5J rear wheel doesn't even look too streched! Thank you guys and Ben (who posted on the other thread) for encouraging me to take my chances! Nokia R's rock, though haven't got any snow yet!
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