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I put PA4 high performance winter tires sized 245/35R20s on my P3D. They really feel mushy, much more than the sottozero 3’s I ran previously on my 2013 M5. Psi is 41/42 all around but after some research I found that several manufacturers will recommend 3-5 psi above published numbers in the cold so I think I should go up to 45 psi to help stiffen them up a bit. I think the extra size in tire needs more air.
Does anyone agree or disagree with this logic? I really hate the way it drives right now. I should mention I’m also on tsportline springs.
Nice, and you get a smidgen more sidewall as well
You should experiment with different air pressures to find something to your liking. I've found that with some tire designs and vehicle weights that lower inflation pressures can sometimes improve handling feel and numbers. Try 39, 42, and 45 PSI for a few days each and see what feels like the best compromise for you. Then you can fine tune from there. I don't think you'll want to go below 39 or above 45 since you'll probably start getting some uneven tire wear.I put PA4 high performance winter tires sized 245/35R20s on my P3D. They really feel mushy, much more than the sottozero 3’s I ran previously on my 2013 M5. Psi is 41/42 all around but after some research I found that several manufacturers will recommend 3-5 psi above published numbers in the cold so I think I should go up to 45 psi to help stiffen them up a bit. I think the extra size in tire needs more air.
Does anyone agree or disagree with this logic? I really hate the way it drives right now. I should mention I’m also on tsportline springs.
10mm wider. Split that in half since the tire stretches on both sides and you'll only see a 5mm difference on the lip. The 35 in 235/35 is a percentage defining the side wall size. So 35% or 245 vs 245 = 3.5mm. It's barely noticeable. Tbh I think the 245 is better in eery way than the 235 except for the reduction in range.I wonder what a 265/35/20 would look like on there.... Would have loved to see a photo of the stock ps4s and the 245 ps4s laying down on the floor next to each other.
You should experiment with different air pressures to find something to your liking. I've found that with some tire designs and vehicle weights that lower inflation pressures can sometimes improve handling feel and numbers. Try 39, 42, and 45 PSI for a few days each and see what feels like the best compromise for you. Then you can fine tune from there. I don't think you'll want to go below 39 or above 45 since you'll probably start getting some uneven tire wear.
What about tire pressure? tesla recommended 42pi for 235/35/20 but still fine with 245/35/20 tire?
I took it down to 38 but try different pressures. You can feel the difference between 38 and 42 for example.
I like the oem20” for my p3d+, but I just took a nasty hit and got a flat . Thank goodness my tires are spent, I was fixing to replace soon but held off as I’ve been contemplating 19” aftermarket and slightly bigger sidewalls to accommodate these unexpected potholes. I couldn’t find a reasonably priced 19” and don’t wanna spend much right now as I have other projects in the works. I plan on replacing with oem tires but saw that u went a different size why did u choose that? I thought the 30 gave less sidewalk protection and is the number I want higher for pothole protection?
A 245/35/R20 will have a 3.4" sidewall compared to the stock tire (235/35/R20) having a 3.2" sidewall. You can see the numbers here: Tire Size Comparison
The tire itself is slightly larger, but not enough to cause major problems. I'd definitely say getting a 19" is a safer move to protect the rims though, check out VMR wheels for some not-so-expensive but good strength wheels for example.
Probably. Check the weight. Maybe they weigh differently?I need to get new tires next. I noticed Michelin has Volvo acoustic tires for the 245 PS4 but not the tesla acoustic. Theoretically I’m guessing this would be better than the non acoustic ps4’s?