MSA 1A tyres 2019
Discussion
MX-5, daily driver, 2 sets of wheels, 6-8 track days per year...pondering entering a couple of sprints next year, just for fun.
I've got AD08R's on one set of wheels as my summer/track tyres. There's plenty of life left in them but they are now starting to show their limitations in low temps, particularly when its wet.
What to fit to the 2nd set of wheels? I ran PS4's last winter and they were great. I'd like to fit them again but they're not on the 1A list; I'm curious as to why, and wondering whether anyone here has the inside-track on whether it will be for 2019?
I've got AD08R's on one set of wheels as my summer/track tyres. There's plenty of life left in them but they are now starting to show their limitations in low temps, particularly when its wet.
What to fit to the 2nd set of wheels? I ran PS4's last winter and they were great. I'd like to fit them again but they're not on the 1A list; I'm curious as to why, and wondering whether anyone here has the inside-track on whether it will be for 2019?
Galveston said:
Aren't the 2019 lists on the MSA/MUK website?
df76 said:
The 2019 Blue Book is now online, including the latest tyre lists. The Michelin PS4 (and PS4s) is now a List 1a tyre.
So it is. Bugger, that'll teach me not to check before posting...I last checked a couple of weeks ago 
Woo-hoo! Thanks both.
Norfolkandchance said:
How do 1a tyres and PS4s in particular drop off in terms of performance with age and gentle road use?
I do a few few sprints per year and could do with some better tyres. Car also does 2 to 3k road miles per year. Don't really want 2 sets of tyres so was planning on replacing all 4 tyres in April. However, 2 have slow punctures and its not worth getting them repaired so, ordinarily I'd get new ones now. But not sure how much impact that would have on performance?
I've not heard any reports of the PS4 dropping off in performance and I didn't notice any with mine, though I wasn't timing laps so who knows...I do a few few sprints per year and could do with some better tyres. Car also does 2 to 3k road miles per year. Don't really want 2 sets of tyres so was planning on replacing all 4 tyres in April. However, 2 have slow punctures and its not worth getting them repaired so, ordinarily I'd get new ones now. But not sure how much impact that would have on performance?
I had mine on for just over a year, covered 13k including half a dozen track days and although there was a bit of life left in the fronts the rears were just about (but not quite) on the limit. I reckon without the track days they could manage double that distance without too much trouble. If i were you I'd replace all 4 now, enjoy the tread-depth / wet weather performance through winter and then they'll be nicely scrubbed-in for you by spring
Might as well link to these while I'm here:
2019 Permitted Tyres (L)
Motorsport UK Blue Book
2019 Permitted Tyres (L)
Motorsport UK Blue Book
Edited by slowTwitch on Friday 30th November 10:45
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