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I will report on the Pirellis after I have a few more K’s. Bob, I’m not sure how quickly you need to replace your tyres, however we will be travelling to SW WA (finishing up in Perth before heading home), in March /April 2018, so by then I should have a much better idea of how they perform. Peter
Are the Pirelli ATR's voids between the outer blocks the same half depth as their 255/55R19 size? I'm pondering the GG AT3 in 275/55R20 due to their more open tread and reportedly being quiet but they appear from pictures to also only have half depth voids between their outer blocks.
Yes, while I haven't seen the 19's, on my 275/55/20's the depth between the outer blocks is about 1/2 the inner depth.
Peter
How are the Pirelli ATRs going?
Pirelli's replacement for the ATR, the All Terrain Plus with its full depth voids between blocks and designed to be more off-road capable, in 275/55R20 size is currently listed to be available in Oz in 4th qtr this year. Unless Pirelli release it in 255/60R19 in the unconfirmed reported release of 8 more sizes in the 3rd qtr, I'll be giving the AT+ in 275/55R20 a try.
My car has now done 32K, the last 12 on the Pirelli ATR 275/55/20's. Of this a maximum of 700Km on gravel road, mostly good surface, no "off road". The bad news is that the inner 300mm or so on both front tyres is starting to show chipping and cutting as I experienced with the original Goodyear's, nowhere near as bad as the originals showed after 20k, so maybe the performance is better but still disappointing. Newbies reading this should refer to my earlier notes as my comment is not to say the Pirellis are no good.
Only other comment on the Pirellis is that I certainly notice the extra cm of height when getting in and out of the car - access height is always used now ! Ride and noise are quite satisfactory for me, the biggest factor with noise is the road surface.
I'm still wondering if the chipping has anything to do with the setup of the car. Comments anyone ?
I have Pirelli Scorpion Verde 255/55r20 which are the tyres fitted at the factory. They have done a mix of tight windy roads (spirited at times), urban and highway/freeway (very small amounts of gravel). They are now at 92,000KM with about 1mm to the wear indicators - it's become a crazy mission to see how long they will last. There is zero indication of unusual wear. I keep the pressures at 38PSi all around as I was noticing a bit more wear on the outer edges of tyres by about 50K Km.Quote:
Originally Posted by peter g
I would definitely get wheel alignment checked.
I had decided that I should take Sean's advice above, however due to the reluctance of a couple of tyre places I checked the matter with initially, and other time commitments I didnt get around to it this year. I went to a JLRA day at the Melb showgrounds last week and during the course of the day found a couple of LRA guys to talk to about my tyre problem, (see original post). Also the Pirellis have now done 16k and while not as bad as the Goodyears, are going to end up the same unless anything is done soon. After looking at my tyres they advised it is definitely an alignment problem and here is the interesting bit which may help others - Get it done by a LR dealer, not just any tyre place. Reason, the car must be set at (or in) "Tight Tolerance Mode" before carrying out the alignment. This is computer set and apparently includes yet another height setting, different from the ones mentioned in the handbook.
Looks like I'm off to MLR in the new year as they apparently have the up to date equipment and techs who know how to operate it.
Also guys, if you get a chance to go to a Jag drive day, drive the F type around the cones - a lot of fun. And, drive the I Pace, it's brilliant.
Seasons greetings to all,
Peter
I forgot to add in the post above that if this is all correct then my car obviously not correctly setup in the first place as the problem was there from the start !!
Peter
TTM isn't another height, instead as the name implies, causes the height off-target tolerance to be much closer to the target height. It would cause too much work for the compressor to have it set for everyday driving but when accuracy is paramount as when having the alignment set, it is most appropriate.
TTM is set by a procedure on the current LRs & RRs, not requiring the use of a diagnostic tool.
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