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Discussion Starter #1
Had to fix a flat on the rear of my cabriolet today. When I took the tire off, I saw that the tire was getting down close to the wear indicators. On my coupe I had to replace the rears a year ago at 15K. Looks like the same thing is going to happen with my cabriolet. Must be an ED thing wearing this rears out so fast.

Len
2014 EV Coupe 18,000 miles
2014 EV Cabriolet 12,000 miles
 

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Sure is strange! Both my 2013 and 2016 did 39+k on the original continentals. I run indicated pressures and don’t always rotate in a timely manner. Wear has been pretty even except initially on my 2016 which was out of spec from the factory.
 

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Maybe the EDs are harder on tires than the gassers.....? We got well over 40K miles on the OEM tires on our 2011. :)
 

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Discussion Starter #5
Yeah, last year when I was dealing with the same situation with my coupe, I got several replies from other ED owners with similar experiences. Went with Vredesteins - not enough history with them yet, but I'll likely go the same way this time.

Len
2014 EV Coupe 18,000 miles
2014 EV Cabriolet 12,000 miles
 

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big tires back smaller tires front, im expecting to get the same as my slk230 got with same mbz big/small set up. i would go thru tires on that at 25k. then i got smarter and put all same sized tires all the way around the slk and boom, easy 50k plus. i didnt notice any difference making all tires same size as the backs. i was planning on the doing the same with my just bot 2009 smart, when the time comes. they look pretty good with 12,000 miles on them right now... and the car. at least i think the tires are the same mileage as the car.
 

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EDs are regen braking with the rear tires. EDs are also more likely to get tire slip on traffic light take-off than the gassers.
"Tire slip on traffic light take-off ..":rofl:
There is a line I would have never believed I would ever hear related to a stock smart
 

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Discussion Starter #9
I think the issue with having to replace the rear tires so soon is unique to the ED version. I don't think tire pressure and/or having the same tires on all four corners would make any difference, although being able to rotate the tires front to back would even out the wear, but that would mean that all four tires would take a hit while they are serving their time on the rear.

If any of you EV drivers are getting significantly longer wear out of the rears, I'd like to hear from you and find out what the secret is. BTW I'm running the factory Kumhos on both of my cars (except for the two I already replaced with Vredesteins), so that could have a bearing on things.

Len
2014 EV Coupe 18,000 miles
2014 EV Cabriolet 12,000 miles
 

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If any of you EV drivers are getting significantly longer wear out of the rears, I'd like to hear from you and find out what the secret is.
Regen seems to place added stress on the tires of ALL EV's regardless of marquee.

Then too, remember that your ED's may have seen more lot time than many and the sun can cook the life out of rubber - what was the "build date" of your tires?

Note, took delivery of our smart ED (MY15, 16,500 miles, Kumhos, w/regen paddles) pretty much straight off the boat and have not experienced the wear problem you are showing??? Then again, most of my travel is at highway speeds . . .

One of life's great mysteries
is why are the Tire Warranty mileage limits shorter on OEM tires vs. the same exact tire purchased as a replacement??? :shrug:
 

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Discussion Starter #11
Then too, remember that your ED's may have seen more lot time than many and the sun can cook the life out of rubber - what was the "build date" of your tires?

Note, took delivery of our smart ED (MY15, 16,500 miles, Kumhos, w/regen paddles) pretty much straight off the boat and have not experienced the wear problem you are showing??? Then again, most of my travel is at highway speeds . . .


Cabriolet:
Tire build date - Nov., 2013
Build date of the car - March, 2014
Hit the NJ dealer in April or May of 2014 is my guess.
I bought it new in May, 2017, so it sat on the lot for three years.

Coupe:
Tire build date - probably Sept, 2013 based on the date on the fronts
Build date of the car - February, 2014
Hit the VA dealership in March or April, 2014
I bought it new in August, 2015, so it sat on the lot for about a year and a half.

Len
2014 EV Coupe 18,000 miles
2014 EV Cabriolet 12,000 miles
 

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Cabriolet:
Tire build date - Nov., 2013
Build date of the car - March, 2014
Hit the NJ dealer in April or May of 2014 is my guess.
I bought it new in May, 2017, so it sat on the lot for three years.
While many may argue - every tire has a birth date (the day it was manufactured) and an expiration date that is sixish years from that manufacture date.

Most automobile manufacturers (and tire shops) warn drivers to replace vehicle tires after six years (although Bridgestone and Michelin say to inspect at 6 years and replace at 10??) so you are nearing the "end."
 

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Discussion Starter #13
While many may argue - every tire has a birth date (the day it was manufactured) and an expiration date that is sixish years from that manufacture date.

Most automobile manufacturers (and tire shops) warn drivers to replace vehicle tires after six years (although Bridgestone and Michelin say to inspect at 6 years and replace at 10??) so you are nearing the "end."
I agree. Some European countries I believe require tires to be no older than six years to pass their inspections. On cars that I put a lot of miles on, I typically would never have to worry about them aging out. Now with not driving the Smarts much or far from home, I'm not as concerned about the age, although I doubt I'd ever let any go beyond ten. In my climate with the cars always garaged, I feel pretty good about that.

Len
2014 EV Coupe 18,000 miles
2014 EV Cabriolet 12,000 miles
 

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Discussion Starter #15
IÂ’ve got 25K on my original tires. Rears are way more worn than fronts. I expect to do the rears before 30K
Thanks Rob. That's more in line with what I would expect/hope for. Maybe it's the Kumhos? What are yours? Please tell me something other than Kumho. :)

Len
2014 EV Coupe 18,000 miles
2014 EV Cabriolet 12,000 miles
 

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You see worn rear tires, I see brand new dorifto tires. You know half empty, half full glass
Had to fix a flat on the rear of my cabriolet today. When I took the tire off, I saw that the tire was getting down close to the wear indicators. On my coupe I had to replace the rears a year ago at 15K. Looks like the same thing is going to happen with my cabriolet. Must be an ED thing wearing this rears out so fast.

Len
2014 EV Coupe 18,000 miles
2014 EV Cabriolet 12,000 miles
 

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I’ve got 25K on my original tires. Rears are way more worn than fronts. I expect to do the rears before 30K
Thanks Rob. That's more in line with what I would expect/hope for. Maybe it's the Kumhos? What are yours? Please tell me something other than Kumho. <img src="http://smartcarofamerica.com/forums/images/SmartCarOfAmerica/smilies/tango_face_smile.png" border="0" alt="" title="Smile" class="inlineimg" />

Len
2014 EV Coupe 18,000 miles
2014 EV Cabriolet 12,000 miles
Yes, I have the Kuhmo tires
 

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Added 5 psi to the door sticker...

I am running rear rims on all four corners, and 185/55R15 tires.


The original front tires were wearing out on the edges, this stopped after I added 4-5 psi.


My current tires, General HP's, which have been discontinued, are 51 psi max.


Running 38-40 front, 44 psi rear.


The current tire sold is General Altimax RT43's, in "H" speed rating...


https://www.tirerack.com/tires/tires.jsp?tireMake=General&tireModel=AltiMAX+RT43+(H-+or+V-Speed+Rated)&partnum=855HR5AMRT43&vehicleSearch=false&fromCompare1=yes
 
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