Has anybody gone with 19 inch 245-45 instead of the 245-40's that come with the car?
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Joined: Jul 2013
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From: Venice Florida
2018 S560
Has anybody gone with 19 inch 245-45 instead of the 245-40's that come with the car?
I'm thinking about making this change when I replace the tires, the 40 profile which the car calls for I believe makes the rims more susceptible to bend over sharp bumps and I've experience a lot of this in the past. My S class which uses 245-45-19 has never had a bent rim, on my 2019 E450 bent 4 rims and counting. Probably going with non run flat should help out with this issue too, currently have michelin Primacy Run flats on the car. I know the speedometer will be off slightly but thats ok.
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From: Maryland, USA
2022 C300 AMG-Line; 2020 E450; 2013 SLK350; 2023 EQS580
I'm thinking about making this change when I replace the tires, the 40 profile which the car calls for I believe makes the rims more susceptible to bend over sharp bumps and I've experience a lot of this in the past. My S class which uses 245-45-19 has never had a bent rim, on my 2019 E450 bent 4 rims and counting. Probably going with non run flat should help out with this issue too, currently have michelin Primacy Run flats on the car. I know the speedometer will be off slightly but thats ok.
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MBWorld Fanatic!
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From: Venice Florida
2018 S560
I am planning exactly that once my current RF stock tires either gets busted or worn out. Shouldn’t be too far from now cos I have about 14,500 miles on the car. Will be replacing with non-RF Michelin Pilot Sport tires. Besides giving the rim more cushion against potholes, a 45mm tall tire fills the wheel well better and gives the car a better look.
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2019 E300
I am planning exactly that once my current RF stock tires either gets busted or worn out. Shouldn’t be too far from now cos I have about 14,500 miles on the car. Will be replacing with non-RF Michelin Pilot Sport tires. Besides giving the rim more cushion against potholes, a 45mm tall tire fills the wheel well better and gives the car a better look.
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MBWorld Fanatic!
Joined: Jul 2013
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From: Venice Florida
2018 S560
So probably gain roughly 10mm sidewall with going from 240 to 245. Should be an improvement. Would just like to hear from someone who runs the 245s on their cars vs the 240s. I couldn’t have been the only one getting bent rims and looking for a solution. 240 is just too low a tire profile for this car as far as I’m concerned strange mb put this size tire on this car. Not like it’s a sports car or anything.
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From: North
W213 220d from 2016
So probably gain roughly 10mm sidewall with going from 240 to 245. Should be an improvement. Would just like to hear from someone who runs the 245s on their cars vs the 240s. I couldn’t have been the only one getting bent rims and looking for a solution. 240 is just too low a tire profile for this car as far as I’m concerned strange mb put this size tire on this car. Not like it’s a sports car or anything.
I run these on a W213 220d
summer:
Front 245/35-20
Rear: 275/30-20
winter:
Front: 255/35-20
Rear: 255/35-20
the winter setup is slightly taller as you can expect… but ride wise its about the same
I have no issues, I suspect that bent rims has more to do with road surface than anything else.
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2019 E300
Going from a 40 to 45 ratio on a 245mm wide tire should make the sidewall 6mm thicker, not a lot of difference. Changing to non-runflat should make a bigger difference. Runflat’s stiff sidewall transfer the force to the rims on a pothole. A smaller rim would make a bigger difference in sidewall height. Do you already have forged wheels?
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Thread Starter
MBWorld Fanatic!
Joined: Jul 2013
Posts: 4,834
Likes: 773
From: Venice Florida
2018 S560
Going from a 40 to 45 ratio on a 245mm wide tire should make the sidewall 6mm thicker, not a lot of difference. Changing to non-runflat should make a bigger difference. Runflat’s stiff sidewall transfer the force to the rims on a pothole. A smaller rim would make a bigger difference in sidewall height. Do you already have forged wheels?
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