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low-profile tires w/ sidewall cracks #4691870
03/11/18 07:03 PM
03/11/18 07:03 PM
Joined: Jul 2014
Posts: 1,024
Winnipeg MB CA
Number_35 Offline OP
Number_35  Offline OP
Joined: Jul 2014
Posts: 1,024
Winnipeg MB CA
A couple of years ago we lent the Mazda 5 to Jr & his wife for a long trip. I thought that the rear tires were getting a bit worn, and decided to replace them before they left. I was shocked to see cracking on the inner-facing sidewalls (but was really glad I'd decided to replace them). The outer-facing sidewalls looked fine. These are by far the lowest-profile tires I've ever had. When I was young, 78-series tires were standard, and 70s were hot stuff.

With these 50s, it's very hard to tell visually when they're low. I suspect we unknowingly ran them with too little pressure.






Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691872
03/11/18 07:06 PM
03/11/18 07:06 PM
Joined: Mar 2009
Posts: 2,677
Cedarbrae, Ontario
xxch4osxx Offline
xxch4osxx  Offline
Joined: Mar 2009
Posts: 2,677
Cedarbrae, Ontario
Wow, good thing you replaced them!


2015 RAM SXT Crew Cab 5.7 with 6 speed tranny.

2008 Mazda 3 GS Sport Hatchback 5sp MT (Girlfriend's car)

Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691873
03/11/18 07:09 PM
03/11/18 07:09 PM
Joined: Feb 2016
Posts: 596
GA
miden851 Offline
miden851  Offline
Joined: Feb 2016
Posts: 596
GA
what was a month/year year of the production; maybe that has something to do with cracks


2008 Mazda6i GT; @208K miles
2016 Honda CR-V EX-L; @36K miles
Re: low-profile tires w/ sidewall cracks [Re: miden851] #4691877
03/11/18 07:11 PM
03/11/18 07:11 PM
Joined: Jul 2014
Posts: 1,024
Winnipeg MB CA
Number_35 Offline OP
Number_35  Offline OP
Joined: Jul 2014
Posts: 1,024
Winnipeg MB CA
The car was about 6-1/2 years old at that point, with about 90K km. I wonder if the Hankooks were the original tires?

Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691879
03/11/18 07:16 PM
03/11/18 07:16 PM
Joined: Feb 2016
Posts: 596
GA
miden851 Offline
miden851  Offline
Joined: Feb 2016
Posts: 596
GA
there is a saying, no more than 5 year old tires on the car; anything beyond you run into risk of compromised performances


2008 Mazda6i GT; @208K miles
2016 Honda CR-V EX-L; @36K miles
Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691881
03/11/18 07:17 PM
03/11/18 07:17 PM
Joined: Oct 2012
Posts: 4,825
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,825
Taiwan
I usually look at these threads expecting to think "Pah! cosmetic. Years left on them" and I usually do.

But maybe not this time.

Can you see the belting? IIRC that's the "official" UK MOT test fail criterion, though in practice the testers seem to do whatever they like.

Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691898
03/11/18 07:36 PM
03/11/18 07:36 PM
Joined: Nov 2008
Posts: 3,275
Oshawa, Ontario Canada
JC1 Offline
JC1  Offline
Joined: Nov 2008
Posts: 3,275
Oshawa, Ontario Canada
That's one of the worst tires I've ever seen. Scary.


2015 Grand Caravan SXT Plus 5w-20 PPPP/Fram Ultra Filter
1997 Honda Civic CX 5w-30 Shell Conventional/Fram Ultra Filter
Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691912
03/11/18 07:54 PM
03/11/18 07:54 PM
Joined: Feb 2014
Posts: 2,596
Canada
Lolvoguy Offline
Lolvoguy  Offline
Joined: Feb 2014
Posts: 2,596
Canada
Exactly why I replace OEM tires ASAP on all cars I purchase used (all of them).
Unless the PO can prove they were just changed AND they are of reputable quality.


06 Lexus IS350- Wife
88 BMW 325is- Mistress
Say "no" to Turbo!
Re: low-profile tires w/ sidewall cracks [Re: Lolvoguy] #4691924
03/11/18 08:11 PM
03/11/18 08:11 PM
Joined: Jul 2014
Posts: 1,024
Winnipeg MB CA
Number_35 Offline OP
Number_35  Offline OP
Joined: Jul 2014
Posts: 1,024
Winnipeg MB CA
Originally Posted By: Lolvoguy
Exactly why I replace OEM tires ASAP on all cars I purchase used (all of them).
Unless the PO can prove they were just changed AND they are of reputable quality.
These are the upscale factory 17" alloys. November through March I run 55-series winters on 16" steel rims, and far prefer them. Am considering buying used 16" Mazda alloys along with four new 3-season tires. The 50-series tires really transfer a lot of shock to the suspension, as well as providing a harsh ride.

Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691930
03/11/18 08:23 PM
03/11/18 08:23 PM
Joined: Feb 2016
Posts: 596
GA
miden851 Offline
miden851  Offline
Joined: Feb 2016
Posts: 596
GA
It’s hard to tell for sure but I think it reads 07/08; so that tire is most likely from Feb 2008



2008 Mazda6i GT; @208K miles
2016 Honda CR-V EX-L; @36K miles
Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691933
03/11/18 08:24 PM
03/11/18 08:24 PM
Joined: Mar 2017
Posts: 6,478
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 6,478
...
Very fortunate you caught those. They look like they would have separated on that long trip, especially if in a hot climate.


Cannot see signatures any longer so it doesn’t matter.
Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691941
03/11/18 08:32 PM
03/11/18 08:32 PM
Joined: Dec 2002
Posts: 42,293
New Jersey
JHZR2 Offline
JHZR2  Offline
Joined: Dec 2002
Posts: 42,293
New Jersey
Yikes.

Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691942
03/11/18 08:33 PM
03/11/18 08:33 PM
Joined: Dec 2011
Posts: 5,093
North Carolina
rooflessVW Offline
rooflessVW  Offline
Joined: Dec 2011
Posts: 5,093
North Carolina
Toast from heat


"Zed's dead baby, Zed's dead."
Re: low-profile tires w/ sidewall cracks [Re: Number_35] #4691951
03/11/18 08:40 PM
03/11/18 08:40 PM
Joined: Feb 2014
Posts: 2,596
Canada
Lolvoguy Offline
Lolvoguy  Offline
Joined: Feb 2014
Posts: 2,596
Canada
Not just heat, but heat and cold cycling with a very dry climate, year round.


06 Lexus IS350- Wife
88 BMW 325is- Mistress
Say "no" to Turbo!
Re: low-profile tires w/ sidewall cracks [Re: Lolvoguy] #4691979
03/11/18 09:25 PM
03/11/18 09:25 PM
Joined: Dec 2011
Posts: 5,093
North Carolina
rooflessVW Offline
rooflessVW  Offline
Joined: Dec 2011
Posts: 5,093
North Carolina
Originally Posted By: Lolvoguy
Not just heat, but heat and cold cycling with a very dry climate, year round.

I meant heat from chronic under-inflation.


"Zed's dead baby, Zed's dead."
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