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F80/F82/F83 M3 and M4 (2015 - Current)
F80 BMW M3 sedan, F82 BMW M4 coupe and F83 M4 convertible forum. This 5th generation M3 and all new M4 features a 3.0 liter twin turbo engine (engine code S55) 425hp and 406lbs of torque! Heavy use of light weight materials makes this generation lighter and faster then the outgoing E9x M3.

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Old 10-17-2017, 12:59 PM
rolsmi1 rolsmi1 is offline
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Staggard vs non-staggard winter setup

Taking delivery of F80 w/CP M3 this week. Newbie to this forum and to staggard wheel setup. I want to get 18" winter wheel/tire package right away. Stock 18" setup (even though I have 20's) is 255/40-18 on 18 x 9 ET 29 Front, and 275/40-18 on 18 x 10 ET 40 Rear. I would like to use 255/40-18 on 18 x 9's on all four wheels, using the wheel offset calculator to check the proposed vs stock 18" setup on the rear. Please comment.
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Old 10-17-2017, 01:50 PM
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Staggard vs non-staggard winter setup

My Winter set from the dealer is square. Not sure if this helps...




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Old 10-17-2017, 04:30 PM
rolsmi1 rolsmi1 is offline
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what size?
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Old 10-17-2017, 04:39 PM
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You want snow tires to bite down into the snow. So, you want the weight of the car to be concentrated in a smaller tire's contact patch, increasing the pressure (pounds/square inch) and therefore the bite.

I bought a wheel from the Tire Rack snow set-up for my E46 M3 for my spare tire. Their snow set-up was square. It comes/came with spacers and longer lug bolts for the back wheels. So, I'd check with them. Even if you don't buy your tires and wheel from them, they likely have the spacers and longer lug bolts you'd need. My spare was a 17" rim, compared to the OEM 18" rims. You need to make sure that the wheels you get clear the brakes, especially if you have the carbon-ceramic ones. Tire Rack's real good about making sure their snow tire packages fit.
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Old 10-17-2017, 10:18 PM
psb1013 psb1013 is offline
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Also, too, you have to remember that for winter tires, you want to go tall and narrow for maximum grip in the snow and ice. I wouldn't go any wider than 255, otherwise, you'll be doing a lot of spinning. Even though a staggered setup looks nicer, I believe non-staggered is best for maximum winter performance.
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Old 10-18-2017, 09:36 AM
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As other have noted, square setup is better suited for winter. Plus you can rotate your tires (with staggered setup you can't do that if they're directional).
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Old 10-18-2017, 09:37 AM
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Quote:
Originally Posted by rolsmi1 View Post
what size?


OEM 18s with continentals


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Old 10-18-2017, 10:53 AM
rolsmi1 rolsmi1 is offline
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I'm inclined to go with 18 x 8 ET 30 w/245/45-18 snows all around. Offset calculator shows +5mm inner clearance and -7mm (retracted) outer clearance FRONT, which is good. REAR is +29mm inner (wow), -9mm (retracted) outer, which is also good but might look kinda weird. This is of course without rear spacers. I'll have to talk to TR about that. With this setup there should be plenty of room to use spacers to move the wheel out further toward the fender. I'd like the rears to track the fronts as close as practical. Cheers and thanks for comments.
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Old 10-19-2017, 06:41 AM
psb1013 psb1013 is offline
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Is there any detriment to using spacers with snow tires? I'm also thinking about going with 245's all around but as the post above mentioned, it might look a little odd, esp. in the rear.
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Last edited by psb1013; 10-19-2017 at 06:42 AM.
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Old 10-19-2017, 07:48 AM
rolsmi1 rolsmi1 is offline
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Spacers just move the wheel out toward the fender. This has nothing to do with tires.
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Old 10-19-2017, 11:00 AM
psb1013 psb1013 is offline
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What size spacers do I need for 245 snow tires all around?
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Old 10-25-2017, 08:57 AM
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I just got Blizzak 245/45R18 on black Rial P10 wheels shipped to my dealer.
Size difference compared to the 255's is quite small; one is closer to the regular front tire and the other is closer to the rear tire.
Went with the narrower/taller principle. Snow here in the suburbs gets cleared pretty quickly if it's a few inches. I figure if there's a substantial snow, a few Ubers to and from work is still less than it would cost to just insure a 3rd car (that I don't have garage space for anyway).

Had Pirelli Sottozeroes on my '14 435 and was gonna go with them; they had very good reviews on TireRack, but the TireRack adviser I spoke with said Blizzaks are the king of performance snow tires; they didn't have any reviews on TR's website yet, so I went with those; negligible price difference. I'm just hoping they're relatively quiet on the highway; the Pirelli's were; I think the Blizzaks I had on my '07 335 were kind of noisy, if I recall correctly.

This will be my 3rd set of Rial wheels; I just like what they offer.
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