DaveH

[DaveH]

Can anyone help me with suggestions for all-terrain tyres for my D3 - size is 255 60 R18? I can't seem to find anything other than the road tyres it came with and they don't stand up to rocky tracks very well - like you get commonly in outback Queensland and the NT. On a recent trip I blew the sidewall twice and could only get road tyre replacements in Brisbane.

[WhiteD3]

Pirelli Scorpion ATR, GG AT2. Lots of threads on this subject so do a search through the D3 section.

[mowog]

Do a size search here....

Tyres (http://www.jaxquickfit.com.au/tyres/search)

[jonesy63]

Dave - look the FAQ section above - in the wheels and tyres section:
http://www.aulro.com/afvb/d3-d4-rrs/93220-aulro-discovery-3-4-rrs-faq.html

[TerryO]

And the new Cooper AT3 is a vast improvement over the old Cooper A/T so should be added to any tyre list that your looking at.

If you want to go off road then consider going one size up with a set of 265x60x18's.This size tyre is still legal, anything bigger in general is not.

cheers,
Terry

[~Rich~]

Does the Cooper AT3 reach the correct speed rating?

The 265 / 60 R18 is rated as a "T" rating which is 190 kph.
The Standard tyre rating is 'V" which is 240 kph.

It passes the load rating for AU of 109 by 1!

[TerryO]

Does the Cooper AT3 reach the correct speed rating?

The 265 / 60 R18 is rated as a "T" rating which is 190 kph.
The Standard tyre rating is 'V" which is 240 kph.

It passes the load rating for AU of 109 by 1!


The standard tyre rating might be 240 kph Rich but so what? Don't you think a tyre rated to 190 kph is rated as fast enough? Are there any A/T's rated to 240 kph?

Yes the AT3 has a 109 load rating which equates to a max weight of 1030 kilos per tyre, I would imagine that is a high enough rating for most applications.

Having said that I also purchased a set of STT's for serious off roading.

cheers,
Terry

[roamer]

The standard tyre rating might be 240 kph Rich but so what? Don't you think a tyre rated to 190 kph is rated as fast enough? Are there any A/T's rated to 240 kph?

Yes the AT3 has a 109 load rating which equates to a max weight of 1030 kilos per tyre, I would imagine that is a high enough rating for most applications.

Having said that I also purchased a set of STT's for serious off roading.

cheers,
Terry





You probably need to ask your insurance company those questions
Because you may not like the answers after a claims knocked back

Cheers Ken

[TerryO]

I'll ask the questions again, are there any decent serious A/T tyre with a V rating?

After these comments I just checked the speed ratings for GG AT2's and Pirelli Scorpions in the 255x60x18 size and they both have a H rating which is also rated below V.

And many A/T 265x60x18 tyres which is the commonly used larger A/T size because it is the largest legal size are also load rated lower (109, 110) than the often standard 255x60x18 size.

And Rich I checked the Cooper Zeon's that you use in 285x60x18 size and they have a speed rating of S which is lower then T

So what does this all mean?

cheers,
Terry

[DiscoWeb]

TerryO,

I seem to recall, maybe in the FAQ section (yep just checked it is in there) a comment noting that legally "4wd" tryes only need to be rated N or above.

If that is the case then almost any tyre is suitable.

Note : I am only repeating what I recall reading somewhere and I am not sure of the authority or accuracy of these comments or the original comments. (my standard disclaimer)

DaveH,

I have Continental Cross Contact AT in the 255/60 R18 size, a reasonably aggressive AT tread that has served me well for my use which is predominately on road with a bit of off road thrown when I can. So far they have impressed me with their grip both on and off road, however I have some concerns about the sidewall strength.

They are out there you just have to find them, but as mentioned plenty of discussion in this forum about tyres.


Good luck,

George

[~Rich~]

Hi Terry,
I run two sets of tyres like you with the Coopers for off road use, the on road main set are the standard GY Wranglers which I will be replacing very soon
for 90% of the time I'm running the standard tyres which is why I was quizzing the Speed rating.

But to make everyone feel at ease please read this re Load & Speed ratings:

https://www.aulro.com/afvb/images/imported/2011/11/992.jpg

So any tyre with a rating of N or higher passes.

[TerryO]

I just checked with my insurer and they said their policy was vehicle modifications are covered including tyre size changes providing those changes and modifications are accepted by the relevant State body such as the RTA.

cheers,
Terry