Help :) Can I fit thicker tire on stock 2015 228i Sport line? |
Post Reply |
|
Thread Tools | Search this Thread |
09-30-2019, 08:05 AM | #1 |
New Member
0
Rep 14
Posts |
Help :) Can I fit thicker tire on stock 2015 228i Sport line?
I am currently running 225/40F28 -92w Bridgestone driveguard runflats. They are terrible with potholes on my 228i xdrive convertible sport line. I am going to switch to non runflats. I figure increasing my tire size to 225/45 would help with potholes. Does anyone know if i can do this with my stock 18" tires? Everything is set up stock.
Thank you for your help |
10-10-2019, 08:35 AM | #2 |
Second Lieutenant
136
Rep 242
Posts |
you mean thicker sidewall? as in go from 18" to 17"? That would for sure help with potholes.
Believe it or not going to a non-RFT may help as well because the sidewalls flex more - but you lose the ability to drive on an airless tire. Seth |
Appreciate
1
Nitrof23MT0.00 |
10-10-2019, 01:37 PM | #3 |
Second Lieutenant
173
Rep 294
Posts
Drives: 2019 M240i Coupe RWD
Join Date: Feb 2019
Location: New England
|
I think Nitro means increasing the sidewall height by increasing the profile of the tire from 40 to 45 while keeping the wheel diameter the same.
This would mean the overall diameter would be increasing from the stock 25.1" to 26". This would cause a 4.5% decrease in the speedometer reading for a given speed. Also of concern would be rubbing, that I can't answer. I actually came here looking for a similar question on going from 245/35-18 to 245/40-18. 245/35-18 is very uncommon for snow tires. 245/40 or 235/40 are all much more common. |
Appreciate
1
Nitrof23MT0.00 |
10-13-2019, 06:50 PM | #4 |
Colonel
4096
Rep 2,925
Posts |
Better off to go to a 17 inch wheel, unless you have the biggest of the big brake options - TireRack can probably verify off your vin. Lighter, more sidewall, and more options for snow tires.
|
Appreciate
1
Nitrof23MT0.00 |
10-16-2019, 10:13 AM | #5 |
New Member
0
Rep 14
Posts |
Yes I was looking to increase size to 45 vs 40. I ended up just putting runflats on even though I hate them. I wasn't ready to spend the money on new rims and unfortunately do not think I'll have the car long enough to justify spending the money (need bigger car). Tire rack also couldn't give me a good answer if they would fit.
|
Appreciate
0
|
03-26-2021, 11:05 PM | #6 | |
Private First Class
73
Rep 115
Posts |
Quote:
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|