Volvo XC40 Forum banner
1 - 20 of 25 Posts

· Registered
Red 2022 Late XC40, Yellow 2017 BRZ
Joined
·
1,171 Posts
Discussion Starter · #1 · (Edited)
I'm trying to figure out what wheel options might be out there. For reference, here are the specs I can find for the OEM P8 wheels:

PCD 5x108
63.4 hub

OEM 19
19" x 7.5" 50.5mm
19" x 8.5" 56mm

OEM 20
20" x 8" 50.5mm (same vs. 19")
20" x 9" 58.5mm (inner 2.5 mm less clearance vs. 19")


One contender is the OEM Polestar 2 19" wheels. Here are their specs:

Polestar 2
OEM 5-V 19" black diamond cut 31680895, 32134523
19" x 8" 50mm (match for P8 OEM 20")
19" x 9" 53mm (extend +3mm vs. P8 OEM 19", extend +5.5mm vs P8 OEM 20")

The new Polestar 19" wheel part numbers are 32327781 (front) and 32327782 (rear).

So the rears would extend (poke) an additional 6mm vs. the OEM 20" P8 setup. Can anyone with the 20" option take a look at the rear wheel well and see if this looks reasonable? If so, the Polestar OEMs could be a good contender for a winter set, as they can be found for around $350/each.

I'll update this post if we can find any other good contenders.
 

· Registered
Joined
·
316 Posts
I'm trying to figure out what wheel options might be out there. For reference, here are the specs I can find for the OEM P8 wheels:

PCD 5x108
63.4 hub

OEM 19
19" x 7.5" 50.5mm
19" x 8.5" 56mm

OEM 20
20" x 8" 50.5mm (inner 6mm less, extend +6mm vs. 19")
20" x 9" 58.5mm (inner 8mm less, extend +4mm vs. 19")


One contender is the OEM Polestar 2 19" wheels. Here are their specs:

Polestar 2
OEM 5-V 19" black diamond cut 31680895, 32134523
19" x 8" 50mm (match for P8 OEM 20")
19" x 9" 53mm (inner 3mm less, extend +10mm vs. P8 OEM 19", extend +6mm vs P8 OEM 20")

So the rears would extend (poke) an additional 6mm vs. the OEM 20" P8 setup. Can anyone with the 20" option take a look at the rear wheel well and see if this looks reasonable? If so, the Polestar OEMs could be a good contender for a winter set, as they can be found for around $350/each.

I'll update this post if we can find any other good contenders.
I have 19 inch winter tires (235 50, 255 45) mounted on some 19x 8 42.5mm offset xc90 wheels. I will take pictures. They should be 3.3 mm further out front and 8mm rear. I test fit them with 235 55 19 tires from the 90 before purchasing a set for the 40. The bigger tires worked OK for a shot drive on the back. They almost touched the inside of the wheel wells on the front at full lock.
 

· Registered
Joined
·
316 Posts
Wheels are xc90 19 x 8 42.5mm offset. Front is just a little bit wider. Rear looks to be even with the widest part of the wheel well. I'd like it to be tucked in a bit more, but for the price it will do nicely. It may also be the the profile of the tire is different. The pirelli's are more round at the edges, where the hakka's have very square shoulders. Sorry if there are duplicate pictures above. I included pictures of all seasons and snows. Tirerack lists many rims for the xc40 (not electric) with 40 and 45mm offset. In my opinion the higher the offset the better, up to the 50.5/58.5. Also keep in mind the load capacity of the rim (should be at least one half the gawr for the axle). These rims are from an xc90t8 with a gawr of 3590lbs, so definitely safe for our 3200ish pounds.
 

· Registered
Red 2022 Late XC40, Yellow 2017 BRZ
Joined
·
1,171 Posts
Discussion Starter · #5 ·
By my math those rear tires should poke out about 16mm more than the OEM 20". But that's good news for those Polestar rims if you're not having any issue with these.
 

· Registered
Joined
·
4,153 Posts
Wheels are xc90 19 x 8 42.5mm offset. Front is just a little bit wider. Rear looks to be even with the widest part of the wheel well. I'd like it to be tucked in a bit more, but for the price it will do nicely. It may also be the the profile of the tire is different. The pirelli's are more round at the edges, where the hakka's have very square shoulders. Sorry if there are duplicate pictures above. I included pictures of all seasons and snows. Tirerack lists many rims for the xc40 (not electric) with 40 and 45mm offset. In my opinion the higher the offset the better, up to the 50.5/58.5. Also keep in mind the load capacity of the rim (should be at least one half the gawr for the axle). These rims are from an xc90t8 with a gawr of 3590lbs, so definitely safe for our 3200ish pounds.
I thought the P8 weighed 4823 pounds … I could be wrong.
 
  • Like
Reactions: Greg S

· Registered
Joined
·
4,153 Posts
Still learning about cars.

So the weight rating needed for a tire is not the weight of the car but the weight on the axle the tire is going on (plus what ever over engineering capacity)?

I had foolishly thought it was the actual weight of the car fully loaded. Never cared as much before this car :) so lots to learn :)
 

· Registered
Joined
·
4 Posts
Wheels are xc90 19 x 8 42.5mm offset. Front is just a little bit wider. Rear looks to be even with the widest part of the wheel well. I'd like it to be tucked in a bit more, but for the price it will do nicely. It may also be the the profile of the tire is different. The pirelli's are more round at the edges, where the hakka's have very square shoulders. Sorry if there are duplicate pictures above. I included pictures of all seasons and snows. Tirerack lists many rims for the xc40 (not electric) with 40 and 45mm offset. In my opinion the higher the offset the better, up to the 50.5/58.5. Also keep in mind the load capacity of the rim (should be at least one half the gawr for the axle). These rims are from an xc90t8 with a gawr of 3590lbs, so definitely safe for our 3200ish pounds.
So just to be clear, those pics are the 235/50 and 255/45 Nokians you mentioned, not the 235/55's off of the V90, correct? Any reason you didn't do a single size considering that the V90 wheels are the same width vs. the P8 wheels being different F/R? Thanks in advance!
 

· Registered
Joined
·
316 Posts
The pictures are of the appropriate tires for the xc40 235 50 19, 255 45 19. The wheels are 19 x 8 42.5mm that come off an xc90. They originally had 235 55 19 all seasons (fit ok on the rear, but less than a finger with clearance at full lock at neutral suspension). The all seasons in the pictures are the factory 20 inch pirelli's.
 

· Registered
Joined
·
4 Posts
Okay, thanks. I'm considering doing essentially the same thing, but my plan had been to run 235/50r19 front and rear on the XC90 rims since they are all the same width. I'm thinking that the different F/R tire sizes on the P8s correspond to the different rim widths?

One more question, think 18" XC90 wheels (same width and offset) would fit? I'd love to get a little more sidewall for the VT potholes (guessing you're familiar with them based on your username?). I've got a line on OE wheels in both sizes....

Thanks again.
 

· Registered
Joined
·
316 Posts
Okay, thanks. I'm considering doing essentially the same thing, but my plan had been to run 235/50r19 front and rear on the XC90 rims since they are all the same width. I'm thinking that the different F/R tire sizes on the P8s correspond to the different rim widths?

One more question, think 18" XC90 wheels (same width and offset) would fit? I'd love to get a little more sidewall for the VT potholes (guessing you're familiar with them based on your username?). I've got a line on OE wheels in both sizes....

Thanks again.
I saw someone had pictures with an 18 inch wheel on their p8. I didn't want to chance it and went with 19 inch wheels. If I did it again, knowing that Volvo's winter setup is square, I would do 235 50 19 on all four wheels. The xc90 rims I found to be more numerous and less expensive on eBay than xc60 or xc40 rims. And yes, I live outside of Burlington and like having as much sidewall as possible.
 

· Registered
Joined
·
4 Posts
I saw someone had pictures with an 18 inch wheel on their p8. I didn't want to chance it and went with 19 inch wheels. If I did it again, knowing that Volvo's winter setup is square, I would do 235 50 19 on all four wheels. The xc90 rims I found to be more numerous and less expensive on eBay than xc60 or xc40 rims. And yes, I live outside of Burlington and like having as much sidewall as possible.
Out of curiosity, do you have any side-view pics of your XC40 with the XC90 wheels and snows on it? Just ordered 235/50-19 Hakk R3's. Need to nail down wheels (either XC90 or just swap on the wheels on the car). Thanks again!
 

· Registered
Red 2022 Late XC40, Yellow 2017 BRZ
Joined
·
1,171 Posts
Discussion Starter · #17 ·
From the Polestar forums:


It looks like Replika R222 18x8 wheels should be a good fit.
 

· Registered
Joined
·
112 Posts
This might be a dumb question, but is it possible to put 235 45 r20's on both the front and back wheels? I thought I read somewhere that Volvo dealers were putting the same size tire on front and back with the staggered wheels.
 

· Registered
Joined
·
316 Posts
This might be a dumb question, but is it possible to put 235 45 r20's on both the front and back wheels? I thought I read somewhere that Volvo dealers were putting the same size tire on front and back with the staggered wheels.
They are doing it for snow tire packages. If it's ok for winter wheels, then it should be ok all the time? And if square is ok all the time, then 255 40 20s should be ok all the way around and 245 45 20s (like on the ice models assuming you use xl rated tires). I'd say 245 40 20s would work too, but xl rated tires are only a 99, not at least 100
 
1 - 20 of 25 Posts
Top