I didn’t know that actually. I thought on a RWD car, the rears would wear quicker. When I got new Potenzas, the rears I replaced (from new) were about 2.5mm, the fronts about late/high 3s. No rotations. So is that due to me?
Not sure this is correct.
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I think mine have been on for 10,000 miles now and I haven’t got around to changing them front to back yet, which I mean to do before our Ireland tour in a few weeks.
I’ve had to go and check them with my little gauge, a gift from the RAC about 30 years ago!
There’s 5mm on the back and maybe 5.5mm on the front so I suppose I have to say it’s arguable:)
The fronts are a bit more worn at the outer edge as you might expect.
John_M might have been referring to wheelspin standing starts.
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Well…I’m not the world authority on this, it’s only a conversation. But I guess it must depend on the type of use. Hard acceleration especially from rest must take its toll, never mind leaving black lines at junctions which I’m sure you would never do!
On a balanced throttle in the corners, there’s no obvious reason why the rears should wear more than the fronts. They carry the same weight, and the fronts are taking some slip in the turns. They also taking the brunt of braking which is just acceleration in reverse.
I didn’t mean to impugn anybody’s driving…there are different styles and it is a ‘sports car’, after all.
I like to knock on but I avoid unnecessary harsh acceleration and heavy braking. I admit I was not always so considerate with company cars.
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Good info.
Yes, I’m not one for heavy breaking, and I see what you mean ref wear and the front takes most of the braking. The drive train is on the rear axle though, so surely that must factor in?
In the spirit of the thread topic and title, whilst not my cup of tea, it seems like Kumho have released a new tyre in the 205/45/17 size
Excuse me if this has been mentioned already
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I have Kumho PS72 in 215/45R17 XL fitted to my NC, with about 1200 miles on them. Came in cheaper than PS71’s from Camskill at around £280 delivered.
Very happy with them so far. Much better ride than the CC2’s in 205 guise that were swapped out and have been enjoying pushing on with them, top-down, in this smashing weather we’ve been having.
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To be fair, I would think that a 2.0 ND with a limited slip diff would wear it’s rear tyres relatively faster than a 1.5 ND with an open diff, during spirited driving 
Good point. And another win for the 1.5:)
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Hi - interested in this as looking at putting the same PS72s at 215/45/R17 on my 2016 ND - I need/want 4 so can I ask if it is a straight swap over and no issue with clearances?
Many thanks
Can only speak personally for my NC and no, there were no issues whatsoever. I don’t think there’s an issue on the ND either but someone else can confirm.
Thanks Pete for replying. Appreciate it. 
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I’ve also had them fitted to a lowered NC, a bit low for my liking but the 215’s were absolutely no problem.
NC now sold I’m actually about ready for some Kumho’s on my ND, I’m thinking 215’s too. I guess there’s plenty of room there on a stock suspension for them.
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I fitted a set to my very first NC years ago and have since fitted them to every other car. More than happy with them and had zero issues. I went up one width size on the current MX5… Anyone who thinks the sidewalls are a bit soft should look at the PS91 which has stiffer sidewalls. I have those on a BMW640d and that feels totally confident in the bends for a big lump with huge torque.