Tyres - Cooper LTZ 285/50/20

[CSBrisie]

Have spent a few days of sand driving at Stradbroke Island with tyres at 18 psi and absolutely no issues in a mix of really soft sand, rugged tracks and of course some flat hard beach driving. Used low range at beach entry and exit but never even looked like a problem. Really impressed. Oh and 8 speed auto and over 800nm of torque (care of a Roo Systems twin 3 inch exhaust plus Ecu remap :) ) make for pretty easy driving!

[Steinzy]

Just a little envious right now....

Glad the car is going well. Sounds like you have a good setup

[rar110]

I took the tdv8 L322 for a Moreton trip a few weeks ago. Reduced tyre pressures to 19-20 psi on 19" wheels. Set the TR to sand & turned off the DSC. I never engaged low range. This thing bubbled around the island with seemingly little effort.

I went with the BIL who was in a NP Pajero. It's a great allrounder of a vehicle. I seriously looked at getting a Paj. However there was one uphill sand track where the Paj couldn't do it, just keep digging itself in. The FFRR just bubbled up in high range without any fuss. I really don't know why the FFRR had better traction than the Paj, but the fun of that moment will live on for years. I'll make sure of it.

The tyres are conti 4x4 contacts at the end of their life. It has the standard 640nm/200kw motor - plenty for me after years driving the turbo perentie (which is also pretty good).

[CSBrisie]

https://www.aulro.com/afvb/images/imported/2015/01/971.jpg (http://s12.photobucket.com/user/mundayc/media/Mobile%20Uploads/2015-01/6226E0B5-8900-4E03-8DD2-FE1F35E7ECB0_zpsidv2rvs4.jpg.html)



https://www.aulro.com/afvb/images/imported/2015/01/972.jpg (http://s12.photobucket.com/user/mundayc/media/Mobile%20Uploads/2015-01/4F1BD352-3DAC-4CBF-BF47-1C9CDCF9A43E_zpst6vxxczb.jpg.html)

[landie56]

Hi There,

Looking at pictures and like to know what roof bars are you using. Also have you any mod to car for touring. l'v got uhf, duel battery and trailer brakes. About to make my rear draws system, thing of making my modular system so it's easy to remove once back home.

Landie56

Jason

RR L322 2002 TD6
:)

[rar110]

Hi There, Looking at pictures and like to know what roof bars are you using. Also have you any mod to car for touring. l'v got uhf, duel battery and trailer brakes. About to make my rear draws system, thing of making my modular system so it's easy to remove once back home. Landie56 Jason RR L322 2002 TD6 :)

And for accessing spare. I was thinking along same lines.

[CSBrisie]

Yes, it has:


UHF
redarc brakes
redarc isolator, 2nd battery in rear floor compartment
Drifta fridge box, with slide, mounted on a floor that is same size as the spare wheel cover; bolted to 4 factory tie down points
spare wheel is then not accessible unless you unbolt floor ofcourse! (I will just put both spares on roof when we head on expeditions).
Racks are three x Rhino cross bars; ARB awning mounts to these.

Looking at Pioneer platform rack using existing feet for expeditions - although LR Expo Rack is tempting as it sits so low and suspect I can make it quieter (add some rubber at front).

Picked up our 2nd hand Bushtracker (2004) caravan yesterday (will start new post re fuel economy towing).

[RR44TDV8]

CSBrisie, do I have this right......you have 285/50R20 fitted to your RR with no modifications? My car looks to be the twin of yours and I need new tyres. Was going for 265/50R20 but if you got 285's on there, I'm having them!
Rgds
Grant

[CSBrisie]

Yep, spot on. I was suprised but they fit fine, no rubbing - and were great at 18psi on deep soft sand at Stradbroke Island (guess the T/C / Terrain resposne helps a tad lol!!) and towing the HEAVY BT last weekend too.

I know another Member here had 275/55/20's Cooper Discoverer on his MY08RRV TDV8 (before later swapping to 18's) but that then requires some mods to inner wheel wells. I figured the extra sidewall gained (not much) wasnt worth the effort.

the BIG test for these tyres will be our Trip planned across from Brisbane to Alice and back on the Donoaghue and Plenty Highways in June. I am very nervous about towing 3 plus tonnes on that road with these tyres. We will have three spares with us (two on roof one in florr) and I actually have an extra rim and tyre at home with a mate in case its a disaster and we need one freighted to Alice; Then it will be a LONG trip home via the bitumen....



cheers

[RR44TDV8]

CSBrisie,

if you dont mind me asking, who did you buy the Coopers from?

[CSBrisie]

Goodyear Autocare
62 Pickering St
EnoggeraQLD4051
(07) 3855 9011

[chaybra]

For anyone interested, Atturo (American Brand) Are soon releasing an 255/55/R19 version of their aggressive mud terrain tyre, personally I will be going 33" on an 18 rim, but for a fraction of the cost of a cooper.

could be worth waiting

[CSBrisie]

Interetsing - thanks Chaybra; LT strength? If a good LT comes out in 19 inch I might swap to those at some stage, although I guess a LT in 20 might follow anyway.

Kuhmo do a "Road Venture AT" LT strength tyre in 20inch now - but its way to wide for a RR (305/55/20)

cheers

[Chrisnussey]

The way I did it but its full time in.

And for accessing spare. I was thinking along same lines.

[CBH25]

I'm running Nitto Terra Grappler AT's
265/60-20

They have worked out to be smooth quiet and reliable.
But no so good in the mud :blush:

[CSBrisie]

delete

[CSBrisie]

wow, I hadnt realised 60 series profile would fit? 32.52 inch diameter?....they must rub in the wheel wells a bit unless you modify? LT strength though - huge Plus!!!!

my 285/50/20 LTZ's are 31.22 diameter (just clear) and the 275/55/20 Coopers are 31.92 I recall.

Gordons (GOE) Tyre chart very useful in this regard:

Green Oval Experience Land Rover training, Range Rover modifcation (http://www.greenovalexperience.com/#!documents-info/cbbz)

cheers

[CBH25]

My humble apologies - I didnt see my typo, I'm running 50 series. NOT 60.
Sorry.

265/50-20

[CSBrisie]

ahhhh that makes more sense!

[RR44TDV8]

Chris, did you get the 285/50r20 under the floor in the spare wheel well? Did it fit ok?

[CSBrisie]

ahh, I only bought 4! I think the tyre guys tried and said it would need some bits of plastic in wheel well moved for it to fit though.

[Defender Mike]

I ordered 4 Scorpion ATR 255 55 r19 yesterday getting fitted Monday. $374 each. I looked at the Coopers & then read the reviews . Not good aparently several failures around the bead ,blow outs etc. one guy was on his 3rd set of replacments under warranty. On the other hand the Pirellis get very good reviews . Just found out my spare is only 18'inch as well . Not sure how that will go although the diameter should still be 763 mm. I will get the tyre fitters to put it on on Monday and see if it uses the same wheel nuts etc.
Mike:)

[CSBrisie]

Hmmm, well time will tell with the LTZ's I guess - more sidewall height and much higher load rating give me some comfort anyway.;)

[Graeme]

There are some reports of lower sidewall problems with the 19" version but I've not seen any for either of the 20" versions.

After seeing how the upper sidewalls on my recently-fitted 19" Hankook RF10s are getting scuffed by rocks on 6km of gravel road each time I go out, I've earmarked the LTZ 285/50-20s for a RRV when I find the right vehicle.

[rar110]

So not impressed with 19" RF10s Graeme?

Is the benefit of 285/50/20 vs 255/55/19:
* 30mm increased, so 15mm taller side wall;
* 116 vs 111 load rating, so stronger side wall?

I was looking at 275/55/19 which are slightly taller but have 111 load rating and not very common.

Are 275/55/20s way too tall? 117 load rating and seems to be heaps of options in this size.

I thought 19" would be better/taller side wall. However as I've read before heaps more options in 20 & 18" rims.

[Graeme]

285/50-20 theoretically have only 3mm more sidewall height so not the reason. The tops of the 19" RF10 (LI 111) sidewalls obviously touch the gravel so the LTZ's LI 116 might keep the upper sidewalls further away from the rocks and hopefully are a bit tougher too. Being a wider tyre might help keep the sidewalls tucked-in better too although on a 8.5" rim rather than the 19's 8" rim the difference might not be much. The RF10's have only been scuffed where the sidewalls are thicker anyway but I don't see any scuffing on my 17" Contis which are not LT.

Edit: If I get a RRV with 19" rims then I might give the Hankooks a try unless these don't do well in the expected limited time I'll have them on the D4. However as most late L322s have 20" rims I'd give the LTZ a try before taking drastic steps to fit 18" GOE rims.

[CSBrisie]

...and GOE's wont fit any Vogue with the Big Brembo's (ie all 4.4TDV8).