Page 1 of 12 12311 ... LastLast
Results 1 to 10 of 115

Thread: 275/55R20 KO2 or LTZ

  1. #1
    Join Date
    Jan 1970
    Location
    NSW SW Slopes
    Posts
    11,475
    Total Downloaded
    0

    275/55R20 KO2 or LTZ

    Is the advantage of a LT-rated carcase and more open tread pattern of the KO2 too compromised by the probable extra noise and fuel consumption compared with the LTZ?
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  2. #2
    RR44TDV8 Guest
    Quote Originally Posted by Graeme View Post
    Is the advantage of a LT-rated carcase and more open tread pattern of the KO2 too compromised by the probable extra noise and fuel consumption compared with the LTZ?
    Graeme, if you are going with 275/55R20, and so you should, try the Pirelli scorpion ATR. I bought these hoping they would be quiet and they're great. I have had them on wet clay mine access roads and in U.S. Up to their armpits and they clean well and seem to find grip where they really shouldn't.
    On road, they're brilliant, a little less quick to turn in and a little more prone to wander than the 255/50 but everything else is brilliant.
    Feel free to drive mine if you want to try them out. I'm at Balgowlah, 10 minutes from Manly and about 20 minutes from your dealer.
    Reds
    Grant

  3. #3
    Join Date
    Jan 1970
    Location
    NSW SW Slopes
    Posts
    11,475
    Total Downloaded
    0
    ATRs wouldn't be my first choice having tried them in 255/55R19 on my D4, although I did like their quietness and good steering which I suspect are at the other end of the scale compared with the KO2. I was initially impressed with the ATRs even in sloppy stuff but grew to mistrust them at speed in heavy rain so would try the LTZs instead if the KO2 seem too uncivilised.

    Thanks for the offer to test drive although I don't think it would help with the tyre selection. The less direct steering of the size is not a concern as I have 265/65-17 on my D4 that seem fine. I'm looking for sidewall durability in rough going so the availability of the LT KO2 in this size is a significant attraction. However I don't want the noise of my LT 17" Duratracs for everyday driving, not that their noise was unduly intrusive on a recent 6,000 km outback trip.

    The tyres on the vehicle will be serviceable for at least a couple of months. However the very short sidewalls are a liability on our gravel roads and the lack of tyre suspension for my wife's injured back coupled with the current availability of the KO2 means that a decision on more suitable tyres will be made sooner rather than later.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  4. #4
    RR44TDV8 Guest
    Quote Originally Posted by Graeme View Post
    ATRs wouldn't be my first choice having tried them in 255/55R19 on my D4, although I did like their quietness and good steering which I suspect are at the other end of the scale compared with the KO2. I was initially impressed with the ATRs even in sloppy stuff but grew to mistrust them at speed in heavy rain so would try the LTZs instead if the KO2 seem too uncivilised.

    Thanks for the offer to test drive although I don't think it would help with the tyre selection. The less direct steering of the size is not a concern as I have 265/65-17 on my D4 that seem fine. I'm looking for sidewall durability in rough going so the availability of the LT KO2 in this size is a significant attraction. However I don't want the noise of my LT 17" Duratracs for everyday driving, not that their noise was unduly intrusive on a recent 6,000 km outback trip.

    The tyres on the vehicle will be serviceable for at least a couple of months. However the very short sidewalls are a liability on our gravel roads and the lack of tyre suspension for my wife's injured back coupled with the current availability of the KO2 means that a decision on more suitable tyres will be made sooner rather than later.
    I heard so much about the "standing water" issue with the ATR's before I bought them but I have had no issues. They have been through really hard rain on the M1 at least a dozen times and I did a trip to Brisbane where it rained all the way there, the whole time I was there and all the way back. Never had a problem. I really love them and for the best part of their life so far, I owned a brace of tyre shops so could have changed them out at any time. Anyway, that's my view.
    Reds
    Grant

  5. #5
    Join Date
    Jan 1970
    Location
    NSW SW Slopes
    Posts
    11,475
    Total Downloaded
    0
    Quite possibly I simply pushed the ATRs too hard.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  6. #6
    RR44TDV8 Guest
    Quote Originally Posted by Graeme View Post
    Quite possibly I simply pushed the ATRs too hard.
    Graeme, don't think so.......I trawled the forums looking for answers when I first heard about this aqua planing thing and I did not find one post where an owner had had this experience in a Range Rover. Every post was about Disovery 3/4.
    I am inclined to think it is a size/car thing. The disco wears it tyres in a completely different way to the Range Rover and I think the amount of contact patch on the ground with the 275/55R20 is the answer.
    I think you will regret the L/T sidewall structure but perhaps not if you don't get used to a better riding tyre.
    I listened to Chris with his Cooper purchase and very nearly went that way but I wanted the extra sidewall of the 275/55 and could not get something as quiet as I wanted with the A/T pattern I wanted. I have had Mickey Thompson which are from the same stable as Cooper and I used the new M/T AT3 which is a similar tyre to the cooper but I couldn't stand it. I had them in 265/75r17 on a Nissan navarra and also on a VW Amarok and the noise was something else. So bad that when I sold the Nissan, I had to put a set of b/stone tyres that we took off another car onto it so someone would buy it. The first two people who drove it with the M/T's thought the driveline was falling out! This put me off the coopers as I didn't want to suffer the noise when the tyres got to 15,000 - 20,000k's.
    I know the Pirelli isn't a "full on" AT tyre but it suits me perfectly as 90% of my driving is on roads, maybe dirt or gravel or bitumen but roads.
    I'd like to see your car one day so maybe when you get your tyres we can do some driving and compare?
    Regards
    Grant

  7. #7
    Join Date
    Jan 1970
    Location
    NSW SW Slopes
    Posts
    11,475
    Total Downloaded
    0
    I wonder how many of the D3/D4 bad experiences were with vehicles fitted with e-diffs that may have adversely affected the steering in such conditions. I can feel my D4's e-diff keeping the vehicle straight if the throttle is opened a little whilst steering through slushy stuff on my driveway without TC having activated.

    I am very mindful of only an extra 2+ cm sidewall height over the standard size so the extra load carrying ability of the BFGs vs the ATRs (LT @ LI 115 vs P @ 111) might be significantly detrimental to ride improvement. The LTZ @ 117 may be similar to the BFG. I'm a little wary of the longevity reports of LTZ's but am prepared to give them a try.

    I wont have 2 sets of rims/tyres again so compromises will be made. ATRs and LTZ would probably be the sensible choices and more than adequate for the occasional rough use but the expected extra noise and poorer handling of the BFG is probably OK too. I may make a spur of the moment decision when provoked.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  8. #8
    Join Date
    Mar 2013
    Location
    Gymea
    Posts
    622
    Total Downloaded
    0
    I've been thinking about those KO2's as well.
    Will be very interested in your thoughts if you do get them!

  9. #9
    Join Date
    Jan 1970
    Location
    NSW SW Slopes
    Posts
    11,475
    Total Downloaded
    0
    I think that the KO2 would be the most suitable of what's available in this size if doing a lot of outback travel. However most travel will be on sealed country roads, some with lots of hours driving, so a less aggressive pattern would be better providing the tyre is strong enough for the infrequent remote area trip. Hence I'm including the Nittos again as I think they would be tamer than the KO2s, producing less noise and rolling resistance yet still satisfy the other requirements. However 5 might be hard to acquire as they seem to be sold in lots of 4 or occasionally 2.
    MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
    VK2HFG and APRS W1 digi

  10. #10
    Join Date
    Mar 2013
    Location
    Gymea
    Posts
    622
    Total Downloaded
    0
    We are talking BFG All Terrain and not BFG MTR aren't we?
    The grapplers look more aggressive than the BFG All Terrain KO2.
    What about General Grabbers?
    Or don't they do that profile of 55?

Page 1 of 12 12311 ... LastLast

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!