New tires...gonna go with 245/45/19
Thread Starter
Senior Member
Joined: Mar 2003
Posts: 422
Likes: 13
New tires...gonna go with 245/45/19
Too many potholes in LA. I'm hoping the extra cushion will help with damage to the rims. It's not a big difference from the 245/40/19's that came on the car....so I figure it should be fine. Came on here to ask if anyone sees a reason why I shouldn't....
MBWorld Fanatic!
Joined: May 2018
Posts: 1,432
Likes: 300
From: Illinois
2021 c300 Cab. Arrived 7/28/21 . 24 GLE 450e.
That’s exactly why I didn’t get low profile tires.
MBWorld Fanatic!
Joined: Oct 2015
Posts: 1,583
Likes: 292
2019 E300
MBWorld Fanatic!
Joined: May 2018
Posts: 3,048
Likes: 905
From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
My tire store said anything under aspect ratio of 50 is considered "low profile".
Like most in the North East, potholes are a fact of life and why I went with the stock 18" wheel vs. the 19" or 20".
If there was a 50 aspect ratio, I would have in heart beat gone with it: give up minimal handling for smoother ride and more pothole protection!
Because of Covid it cost $400 plus a tire, including balancing for each replacement tire. (I also did the remaining tire as I wanted all new rubber. I have kept the fourth tire in my garage as a replacement/spare when and if needed)
Last edited by JTK44; Apr 20, 2023 at 02:46 PM.
MBWorld Fanatic!
Joined: Nov 2014
Posts: 5,358
Likes: 1,097
.
Interesting: I have the stock 18" wheels. Three of my original Pirelli Centurato P7 developed bubbles on the sidewalls and I replaced them with OEM RF Pirelli Centurator P7 tires. All are aspect ratio of 45.
If there was a 50 aspect ratio, I would have in heart beat gone with it: give up minimal handling for smoother ride and more pothole protection!
If there was a 50 aspect ratio, I would have in heart beat gone with it: give up minimal handling for smoother ride and more pothole protection!
MBWorld Fanatic!
Joined: Oct 2015
Posts: 1,583
Likes: 292
2019 E300
Interesting: I have the stock 18" wheels. Three of my original Pirelli Centurato P7 developed bubbles on the sidewalls and I replaced them with OEM RF Pirelli Centurator P7 tires. All are aspect ratio of 45.
My tire store said anything under aspect ratio of 50 is considered "low profile".
Like most in the North East, potholes are a fact of life and why I went with the stock 18" wheel vs. the 19" or 20".
If there was a 50 aspect ratio, I would have in heart beat gone with it: give up minimal handling for smoother ride and more pothole protection!
Because of Covid it cost $400 plus a tire, including balancing for each replacement tire. (I also did the remaining tire as I wanted all new rubber. I have kept the fourth tire in my garage as a replacement/spare when and if needed)
My tire store said anything under aspect ratio of 50 is considered "low profile".
Like most in the North East, potholes are a fact of life and why I went with the stock 18" wheel vs. the 19" or 20".
If there was a 50 aspect ratio, I would have in heart beat gone with it: give up minimal handling for smoother ride and more pothole protection!
Because of Covid it cost $400 plus a tire, including balancing for each replacement tire. (I also did the remaining tire as I wanted all new rubber. I have kept the fourth tire in my garage as a replacement/spare when and if needed)
Are the oem 18” tires already 45 ratio?
Trending Topics
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: May 2018
Posts: 3,048
Likes: 905
From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
MBWorld Fanatic!
Joined: Oct 2015
Posts: 1,583
Likes: 292
2019 E300
What the OP is asking is if anyone have upsize their aspect ratio and if there is any ill affect beside the lower speedo and odometer. On a 18" rim, you could upsize to a 50 ratio tire and get more side wall. I think the jump from 45 to 50 will make a much bigger difference than the jump from 40 to 45 comfort and protection wise. If it is doable, it might be worth considering for me to upsize when its time to replace all 4 tires.
The debate between 18" and 19: have been talked about to death, it is really the individual's preference, the truth is, there is really minimal difference between the two. If you step up to 20" or down to 17", that is a different story.
MBWorld Fanatic!
Joined: May 2018
Posts: 3,048
Likes: 905
From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
I thought you upsize your tire ratio, my mistake.
I think the jump from 45 to 50 will make a much bigger difference than the jump from 40 to 45 comfort and protection wise. If it is doable, it might be worth considering for me to upsize when its time to replace all 4 tires.
The debate between 18" and 19: have been talked about to death, it is really the individual's preference, the truth is, there is really minimal difference between the two. If you step up to 20" or down to 17", that is a different story.
I think the jump from 45 to 50 will make a much bigger difference than the jump from 40 to 45 comfort and protection wise. If it is doable, it might be worth considering for me to upsize when its time to replace all 4 tires.
The debate between 18" and 19: have been talked about to death, it is really the individual's preference, the truth is, there is really minimal difference between the two. If you step up to 20" or down to 17", that is a different story.
Ditto with going between 18" wheel and 19" vs. 19" and 20": the percentage difference between 18" to 19" is greater than 19" to 20".
BTW, in the old days we use to call upsizing stage 1, stage 2 and stage 3.
see: https://stanceworks.com/forums/showt...e-System-Guide
Senior Member
Joined: Dec 2017
Posts: 310
Likes: 57
e300
I would not deviate from the manufacture spec. Your saying since you up the side wall, now you can freely run over any pothole you see? I wouldnt test that theory if I were you lol. I bent 4 rims on 55 height tires on 17 inch rims. I had a 2001 Audi A4, ran over anything I saw. Drove over small curbs even lol. I even tore a CV boot and damaged the CV axel because of how I drove. I learned the best way, through my wallet lol. You need an SUV my friend. Its your driving style not the tires.
