Gents,

I'm new to an XFR and will be needing snow tires. I live in Michigan and we get some significant snowfall. Given the terrible conditions of Michigan roads in the winter I would strongly prefer a larger side wall.

That said I am looking for input from people who have experience with running larger than 20" wheels (22"+), or larger tires on 20' wheels.

My ideal tire size based on available options is 255/45r20 (this tire) on all 4 corners This would be a 3 inch increase in height in the front, and 2 inches in the rear compared to stock sizes. Surely someone has experience with 22" wheels?

https://www.tacomaworld.com/tirecalc...0r20-255-45r20
https://www.tacomaworld.com/tirecalc...5r20-255-45r20

Please, reserve feedback for actual experience.

 

I'm in the north east and drive through winter in mine so snow tires are a must. And the wheels bend very easily so you're asking the right questions...

For 20inch wheel options I don't think you've got your calculations right. Oem tire is 255/35/20 on 20 inch rims. If you go from 35 to 45 that will add an inch to the sidewall (2 inches to rolling diameter). I don't think you will have clearance issues with that as others have upsized their wheel/tire combo, but will leave it to others on here to comment. Of course you will have a misread on speedo unless you can get it adjusted.

I have found the backs to be a bigger issue as the wider wheel is more prone to bending. So you'd want to upsize them accordingly if it fits. Note that the XFR standard staggered rear wheels have quite different rear offset to the other XF models so I don't think you can just use the same wheel type as the front. Would check that carefully - think it might be offset 66 or so on the rear but I don't quite remember.

I didn't understand the question about 22 inch wheels as that would make the sidewall a lot smaller...

 

20inch maximum size is 245/40 ET49. 255/40 ET49 I got wheel arch girndining on extreme turn angles. Runing R22 255/30 on fronts and that is absolutely maximum posible size for XF front.

 

Thanks for catching that. I meant to include a link to the factory rear size, which is a 30 profile. A 45/20 tire is 3 inches bigger in the rear, which is quite a lot and on par with a 22"+ wheel, hence the question about who is running 22"+ wheels.

As for width of tire, if there were A. a wide studded tire I would consider it, B. Winter tires work better narrower. C. It's much less expensive (basically half) to do the studded tires referenced above.

By rough calculation your 22's are 3.5% smaller than a 255/45/r20 tire. I'm thinking it might actually work if I don't have aggressive turning angles.

https://www.tacomaworld.com/tirecalc...0r22-255-45r20

 

I am pretty sure 255/45 r20 wont fit in fronts. and i mean not only extreme angles. dont throw your money in tyres which wont fit.

 

I'm running 235/45 r19 Minerva winter tires (I went down to the basement and checked as I can't find a listing for that size on their site) on my 15 XF 5.0 (should be the same big brake package as yours unless you have Brembos). They are mounted on stock XF 19 inch rims which just clear the front caliper by a few milimeters as I couldn't stomach going thru a set of 20 inch snows in a season and a half as the price difference was equal to another week skiing. They have done well after 14k last winter I don't know if I would really go much wider for deeper snow. You do need to watch your throttle though as they spin on dry pretty easily. Haven't rubbed anywhere front and back and have been solid enough I haven't put my chains on while driving my daughter to her 112 days on skis last season (granted 20 of those days were probably on the Conti DWS which I learned the first snow last season stand for Doing the Winter Slide.

 

I hear you really got snow this week in Michigan!

I know it wasn't your question, but my advice if you want more sidewall is to find a 19inch that fits over the brakes. Hard to find but some 19in jag wheels will work. Got to get offsets right too.

 

Two feet here at about a foot per day. Three feet just to the West!

 

I guess in two feet it doesn't really matter what size tires you have!

 

Hey, I'm looking to put a set on my 2015 XF AWD. The rolling diamter of the front is 27"; whereas, the rears have 26.7". I've heard that anything over 0.1" has the potential to disturb/damage the AWD system. I want to make sure I don't screw things up, especially since the rears have more wear compared to the front, further increasing the rolling diameter difference.

 

Why not the same front and back? Do you have a staggered setup?

 

Yes, the front rims measure 9x20 with 255 35 r20 tires.
Rear rims measure 10x20 with 285 30 r20 tires.

They're OEM Rims from a Jaguar XJ.

 

Previously, I tried 255/45 r19 on 9x19 front

285/40 r19 on 10x19 rear.

There was minor rubbing b/w tire and fender liner in the front, no issues at the back (at least not with any weight in the back, i.e heavy cargo or passengers). The overall rim + tire diameter shouldn't exceed 27 inches.

 

That's only a 1% difference

Those tire sizes were fitted from the factory on the 2013 and 2014 3.0 AWD models when specced with 20inch vs 19inch wheels. So I can't see any problem there

 

But check the offsets of the wheels as some of the staggered setup Eg the XFR models have a very different rear wheel offset than other models.

 

The offsets are 49 front (same as xf) and 46 rear.

I know that the xfr and xers come with staggered set up, but the 20 inch on non r xf (at least awd version) have never been staggered.

The fitment wont be an issue, I don't think. Just want to be cautious of rolling diameter. As it stands the difference us 1.1% b/w front and rear, but as mentioned, the rears have more wear on them (8/32 front and 7/32 rear, plus the fact that tires in the rear are more stretched due to wider rim width. Taking all these factors into account the difference is more than 1.1%.

 

This thread has been hijacked @Zereldo

 

Woops! I was under the impression you had your question/concern addressed, I didn't want to create another thread. Sorry!