04-30-2018, 04:02 PM | #1 |
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Tire 245/40/18 Front on 335 xDrive 2014
Hi, been searching and reading though a lot, but could not find some examples confirming that setup.
OEM tires/wheels: 225-45-18 in 8" rims 2014 F30 335 xDrive with M Package Anyone tried and succeeded in upgrading to 245-40-18 SQUARED ? The reason is that I find the 225 a bit narrow on the M-Package'd car. I just bought a used one and they need to replace a faulty tire in the back. And they are winter tires also. I want to take the opportunity to upgrade the tires (paying for the difference for the front tires) and get better ones and SUMMER ones. The car is NOT staggered, hence on 18" / 8" rims. I could go for 225/45 in front and 245/40 in the back, but i'd like to have it SQUARED this time. My past 2 cars were staggered (225 front and 255 back). Not the best for rotation. I'm just afraid it might look too wide in front. What about car behaviour ? Clearance in front ? Remember it has M Package, if it makes any difference (I dunno). Thanks in advance for your feedback if any of you did that move. PS: I should get the car in the next 2 days. |
04-30-2018, 04:07 PM | #2 |
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04-30-2018, 04:31 PM | #3 | |
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245-40-18 will work just fine for a square setup on OE wheels. I ran my 245-40-18 PS4S on my OEM 397's before getting new wheels, they look pretty good with a 245 on them. You won't have to worry about clearance issues. With the 40 section tire the overall height is 1.2% less than 225/45 so you'll have that much less height and that much more wheel gap, which shouldn't really be percetible. Do you have adaptive suspension? M Sport package on xDrive still comes with the xDrive suspension, the only upgrade option being adaptive. You will notice a big increase in grip, much sharper turn in, and increase in comfort if coming from RFTs. I'm no fan of staggered setups, adding in understeer is literally the last thing the F3X chassis needs, especially on the stock suspensions.
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04-30-2018, 06:17 PM | #4 | |
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it confirms my choice. Thanks again ! |
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04-30-2018, 06:20 PM | #5 | |
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I plan on asking for the Firestone Firehawk tires (hopefully they will accept to select them -- otherwise I might simply ask them for a credit and buy them myself). Thanks for your feedback ! CANT WAIT TO HAVE ITS STEERING IN MY HANDS !!! |
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04-30-2018, 09:35 PM | #6 |
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New to the forum , cannot post only reply so apologies for using your post, but it is close to my question. I have 2016 340iX supplied with OEM 225 45 R18 91V run flats all around. I bought non runflats in the Conti Extreme DWS-06 but I see the tire shop put these on with lower sidewall in 225 40 ZR18 92Y. What are the concerns and performance issues with this setup? I thought I saw that there may be spedo inconsistencies and also handling/DTC issues? Any technical comments are very much appreciated, thank you.
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05-01-2018, 02:10 AM | #7 | |
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05-17-2018, 06:06 PM | #8 | |
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05-18-2018, 04:57 AM | #9 |
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I ran Bridgestone RE050's at 245/40r18 without an issue with 8.5et35, which is pretty much the same clearances as the stock 8et34. Currently running 245/45r18 MP4S with no issues, however I doubt Bridgestone's in that size would have been problem free.
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03-18-2023, 01:38 AM | #10 |
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Hello guys
I need help with my car I have to replace my tires Bmw 4 series gran coupe 2014 2l tdi automatic At the moment I have 225/45/18 front and rear I would like to go wider 245 front and rear for more grip Do u think 245/40/18 will be ok for front and rear? |
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03-18-2023, 02:28 AM | #11 |
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