Tyres are Yokohama Advan V105
Mileage is 12,000
Manufacture date is Week 09 of 2019
There is longitudinal cracking on the innermost groove of 3 out of 4 tyres as pictured.
None are deep or wide so I’m inclined to monitor, any other thoughts?
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Bin them and fit new.
They are the only thing holding you to the tarmac👍.
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Agree, don’t take a risk with tyres or brakes - if you want confirmation on the tyres just drop into any tyre shop and ask them to check them - you already know what they’ll say
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Blimey Ian that’s a shame as there appears to be stacks of tread to go?
Only 3 years too.
Mmmm…
But 100% with the guys.
They need binning however unfortunately premature.
I’ve done that twice with my wife’s Sport Ian.
Really hissed me off TBH.
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4 year old tyres on my Audi were showing a lot of cracks, they just about needed replacement anyway but I was quite surprised how bad that got in that short period, “modern” tyres seem to do this a lot quicker than old ones so it seems to me.
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They’re dead. Rubber is an age limited item, not just mileage limited. Kept outdoors, the exposure to sun, and temperature fluctuations hardens and dries out the rubber. If they have cracks, it means they’re hard and will have zero grip, they’re probably dangerous. Get them gone.
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Yes that’s totally rubbish (to moderate my language), certainly will not be going for these again which is a shame as they’re actually decent driving tyres.
Indeed, not 3 1/2 years though….
Can be, if kept outdoors
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May be going against the grain but I would not have an issue using them personally.
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If they’re cracking like this, it means many of the compounds that keep the rubber elastic, stretchy and malleable are gone. This means it’ll Have zero grip and is likely to be hazardous in the wet. A choice to use tyres like this, is a choice to admit you’re happy to risk the lives of those around you.
I have no idea why people seem to not quite grasp that the tyres are literally the only thing that touch the road. They affect your cornering, braking, acceleration and handling, and on a car the size of an mx5 the contact patch is minuscule. Why would you have anything other than the best and most effective rubber on your car?
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I have no issue grasping that the tyres are the only thing that touch the road, I think anyone with a set of eyes could grasp that less than difficult concept.
I would much rather have a decent brand tyre with a bit of cracking in it than a no name tyre with much worse grip and handling characteristics.
I would like to know how you can qualify your statement “it’ll have zero grip” as this is absolute nonsense.
I understand your train of thought but you are being overly sensationalist about it. If that is the worst of the cracking, the tyre is on its way out, theres no doubt, but how the vehicle is driven is going to have far more of an effect on the safety of others than a potential slight reduction in grip.
Driving style and situational awareness are of far more importance and there are plenty of drivers out there that could have the best tyres in the world but I still wouldnt want to be on the same road as them.
Just to add, cracking like this I would not drive on as it’s seperation of the treads and would not only fail and MOT but be illegal. also any cracking in the sidewall is a big no no.
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Driving style doesn’t help when you have to emergency brake at 30mph when a child runs out into the road.
Yes I’m probably being sensationalist, because I have zero sense of humour or tolerance when it comes to ■■■■ tyres. There’s just no excuse for them.
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It is quite common and very normal. The rubber at the base of the tread is very thin and prone to tearing. It has a hard life as it is continuously flexed and stretched, plus having pneumatic and hydraulic impact in motion.
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I had a crack in the inner groove on all 4 tyres original Yokos. It had passed the mot at Mazda but I enquired at two national tyre fitters & they both said they were legal. However at the next mot I got an advisory on all four. So, I decided to fit new all round. When I picked the car up the fitter told me they were legal because no steel cords were showing. Ok but if you got stopped, would old bill agree. Glad I fitted new saves a lot of worry.
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Yes they would agree. but what do I know 
I had this on some factory fit Kumhos on an old vw. It was slightly worse but I replaced all four. The tyre place was shocked as they are by definition legal. They still had plenty of grip aswell but I would be more concerned about them delaminating not blowing out on a motorway run or in more extreme conditions.
Not worth the risk to me…… I have the same tyres on my mx5 they’re oe fit from 2017 and no cracking. Must be environment or differences in batch
I ran a Volvo XC60 for 3yrs from Sept '17. It came with Continental tyres on it which which showed that issue after 3yrs when I returned it to the lease company. I was under the impression Conti’s where/are a good tyre…perhaps not !!
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I had the same problem. My mechanic advised ok for limited winter driving but replace them before summer
I did and new tyres are so much better…treat yourself!
Hankook Ventus put on yesterday. Have a couple of significant trips in the next two months which will put about 2,500 miles on the car.
Where there’s doubt there’s no doubt.
They may well have been fine for some time and contrary to some comment they still had plenty of grip, however I have had this car for 1000 miles so I don’t know how they have been managed for the first 11,000 miles.
Yokohama would take them back and examine them however life’s too short to organise that.