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Post by alf on May 18, 2017 9:03:47 GMT
Changing the rear tyres on the XFR (Dunlop Sport Maxx OE fitment to the newer "RT2" version) has been a total revelation. When I went from the old ones to the winter tyres there was a marked improvement, going from the winters to new tyres has just been a massive step up. I cannot believe how well they deploy the power, even in the wet. A few times now I've switched the TC half off and booted it away from the T-junction in the rain, expecting some queefery, but it has just stuck and gone.
Which means.... the old ones must have been toasted. They were only 2 years old and still had 2-3mm tread on them, but something (and it was not massive lairy smoky oversteer, mine is occasional and minor) had happened to them. They were never the stickiest sports tyre out there, but had been fine not long before. Even in dry mild conditions they had started being incredibly slippery.... Considering most of my driving is motorway miles, it seems a bit weird - but Evo and others do talk about tyres "going off", presumably on heavy powerful cars it is more likely.
Another reason not to push things anywhere near the legal limit - the car is just so much better to drive now.
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Post by Deleted on May 18, 2017 10:00:09 GMT
Interesting. I must admit that the major difference I notice with new tyres is that they are quieter and improve ride quality. Grip and traction don't seem to change to any great degree, at least with Goodyear Eagle asymmetrics.
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Post by johnc on May 18, 2017 10:20:35 GMT
My old Bridgestone RE050 used to have much less grip when they got down to about 2.5/3mm. It was very noticeable.
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Post by Tim on May 18, 2017 10:55:15 GMT
Could it be that if you mainly do motorway mileage they went a bit hard and shiny and possibly would've responded to a periodic 'scrub'?
They could be a bit like old elastic bands - shiny & brittle!
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Post by alf on May 18, 2017 13:21:29 GMT
They definitely get scrubbed sufficiently! It could be a Dunlop thing, but I recall a similar but less marked effect with Pirellis and others before. The P Zero Rossos on the GTA became a lot less grippy even in the dry (when less tread should help, if the rubber is not fecked) when around 3mm. Having 460lb ft and 500bhp going through two tyres is always going to make these things more obvious, it was only under hard acceleration it was a big issue and with 4WD I'd never have noticed. But when it got to the stage I pulled a big tank slapper in the outside lane of the M3, in the dry, not even giving it full throttle, it was time for a change  |
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Post by Martin on May 18, 2017 13:54:10 GMT
A great improvement, but from a really low base by the sounds of it!
Surprised the rears have lasted 2 years, even with a winter set, has your mileage reduced? My rears lasted 33,000 which is just over a year thanks to having winters, much better than the super sticky P Zeros in the Boxster which only manage 10-11k miles. I haven't noticed the rears going off in either car, but when the BMW rears we're under 3mm I did get the TC light when it was really wet, but no issues in the dry.
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Post by Big Blue on May 18, 2017 16:08:46 GMT
The rear on my R1 is about 4k old and I will probably off it when I get the front done (which is about 8k old and has no feel left in it) Different brand just to see is in order.
The Gorilla needs new rears by the end / middle of the summer due to them being TLGP'd every time I take the car out. Fronts can go at the same time as they're NOT Pilot Sports. It will be interesting how that makes the car feel in the few scenarios I get to use it.
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Post by PG on May 18, 2017 17:23:23 GMT
It could be a Dunlop thing, but I recall a similar but less marked effect with Pirellis and others before. The Dunlops on my V8 XF were worn to about where yours were and they were awful. I had a big moment sedately leaving a bone dry roundabout and decided to change as soon as possible. |
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Post by Stuntman on May 18, 2017 20:21:18 GMT
I get 12-15k out of the rears on the M3 with no significant dropoff in rear grip but I drive the car a bit differently, keeping it smooth most of the time. It flows better that way. The Cayman is a bit more sensitive to tyre tread, it feels much sharper on new boots. Rears last 14-17k.
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Post by Boxer6 on May 18, 2017 21:21:38 GMT
The rear on my R1 is about 4k old and I will probably off it when I get the front done (which is about 8k old and has no feel left in it) Different brand just to see is in order. The Gorilla needs new rears by the end / middle of the summer due to them being TLGP'd every time I take the car out. Fronts can go at the same time as they're NOT Pilot Sports. It will be interesting how that makes the car feel in the few scenarios I get to use it. All I can say to that is - wow! I was doing well to get 3.5k out of the Battlax's on my ZX6! Wasn't an issue on the ZX636 as I only did about 3k on it, though it was due a new rear when I sold it . . . ... I've got about 4mm left on the fronts on the Legacy (PS3's) with about 6mm on the rears, and I'm starting to notice the difference in the steering now - I think! Sadly, I don't get the chance to push it hard very often these days, but there's definitely a fall-off. |
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Post by Roadsterstu on May 18, 2017 23:24:00 GMT
My old Bridgestone RE050 used to have much less grip when they got down to about 2.5/3mm. It was very noticeable. I can second that. The grip levels dropped right off. |
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Post by alf on May 19, 2017 10:16:46 GMT
In terms of tyre life Martin, my rear tyres managed 40,00 miles in total (but probably 12,000 of that was with winters on, so 28,000) since I bought the car - they were not quite brand new when I got the car. The fronts did look pretty much brand new then and are now about half worn.
Winters have done 12k+ miles and have 6mm tread remaining front and rear.
Overall, very satisfactory.
I did almost exactly 20k miles last year and the year before (slightly over) but am seeing a reduction this year as we split up the UK business into two, and I manage the southern half and Ireland, but all of it (SME and Corporate). Before I managed the SME side for the whole of UKI so drove to places like Manchester more than now....
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Post by Martin on May 19, 2017 10:39:52 GMT
28,000 is pretty good, better than I expected but if a good % is on motorways you'd expect them to last longer. I'm dissapointed with the wear rate in my winters, the rears have done 20,000 and they're down to 3mm so will need to be replaced before they go back on.
In contrast to the high wear rate of the summer tyres, the winter rears on the Boxster have done 7k miles and have 7mm left.
Congratulations on the broader responsibility!
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Post by Big Blue on May 19, 2017 14:45:06 GMT
The rear on my R1 is about 4k old and I will probably off it when I get the front done (which is about 8k old and has no feel left in it) Different brand just to see is in order. The Gorilla needs new rears by the end / middle of the summer due to them being TLGP'd every time I take the car out. Fronts can go at the same time as they're NOT Pilot Sports. It will be interesting how that makes the car feel in the few scenarios I get to use it. All I can say to that is - wow! I was doing well to get 3.5k out of the Battlax's on my ZX6! Wasn't an issue on the ZX636 as I only did about 3k on it, though it was due a new rear when I sold it . . . ... I've got about 4mm left on the fronts on the Legacy (PS3's) with about 6mm on the rears, and I'm starting to notice the difference in the steering now - I think! Sadly, I don't get the chance to push it hard very often these days, but there's definitely a fall-off. Yeah: the modern tyres now have a harder wearing line in the centre section plus I commute on mine so it's not exactly getting 170+BHP through it very often. |
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Post by PG on May 19, 2017 16:14:39 GMT
For tyre wear top trumps, we've just changed all four on our Shogun. They have been on since new, so that's 65,000 miles. We swapped them corner to corner after 30,000. But then all terrain tyres have deeper treads to stat and if you don't so much serious mud plugging you can run them down more than they recommend.
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Post by bryan on May 19, 2017 17:11:18 GMT
The Evoque was north of 50k when I swapped it and was still on the original tyres it came with and about 4mm of tread left all round - miracle tyres that could have given your Shogun a run for its money if I still had it!
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