How much wobble and wallow...?

[shokenore]

The tyre has been designed to give grip in mud hence the chunky blocks to cut into a soft surface.
The sidewall of the tyre has a fair amount of flex to cope with the obvious surface undulations it will encounter off road and to allow for the ability to run at lower pressure.
It is NOT a road tyre which will have a massively stronger sidewall construction to reduce tyre roll during cornering,the tread pattern will be optimised to give good grip and water dispersal,and to allow for good tyre life and low road noise,all factors not considered important for a offroad tyre.
My source ? My beloveds 15 years with Pirelli .
And yes I do get the calendars

[TonyN]

You don't have more rubber on contact with road with M/T's no matter how big/wide, the voids between the tread blocks are huge, so actual rubber on tarmac is far less that A/T's or road tyres. being softer compond helps make up for this, so in the dry you don't notice much difference, but in the wet its noticably different.

Braking suffers purely due to the actual size of the tyres, and the extra leverage they put on the brake pads, grip is pretty irrelevent.

[Predictable Bob]

Ta !

[Karma Supra]

I would say I am running a similar setup to you. Although I am on A/Ts I have more lift.

No real problems with wobble and wallow. Infact a little more wallow might make the ride more compliant on the country lanes.

I have fitted new ball joints all round and poly bushes, still to go on, new steering rack bushes and new lower bushes (the old ones need cutting off and need to buy a suitable saw to do so) but I’d not say it was excessively wobbly before. It did feel tighter afterwards.

The truck feels stable enough at 100+ and although I'd not chuck it about I'm confident to emergency stop, change lanes etc.

I'm not sure where exactly you are in reading but it can’t be far, if you want to meet up and compare how lifted third gens ride and drive I'm happy to, I'm actually curious about comparing ride myself!

I still have the factory rag joint, and the 4crawler extension spacer. Have you had a proper alignment done after the lift?

[Antob]

Leighh did you ever find the problem with your steering?

I have the same problem around 50mph -60mph, i am running a 2" suspension lift (Ranchos) and 265/75/16 BFG A/T on 8" rims with -32 offset.
I have also just replaced the steering rack bushes but did'nt solve the problem.

Anybody else experience similar problems and may be able to help i would appreciate it.
Anto

[J i m s t e r]

When I collected my Surf it was on GG2's all-round. Never run a vehicle on this kind of tyre before. Didn't get on with them to be honest and ultimately swapped them for Vredstein Ultrac SUVs which totally transformed the car on tarmac, much more smooth and consistent. Great in snow too.

Not to say the GGs are crap tyre, but they weren't the right tool for the job. Most of my driving is on tarmac and when it was wet, you'd have to drive much slower on the roundabouts than when it was dry. Obviously this is general common sense but I've had RWD vehicles before and the difference in wet/dry wasn't as pronounced when driving the Surf on GGs.

There were a few opposite lock moments and a few skids under braking forces that I would not consider excessive or "Emergency stop"-type efforts, certainly the short skids came as a surprise (thankfully none in the underwear...) My driving style is not at the nutcase end of the spectrum either. Motorway speeds revealed an imbalance wobble too.

I had the suspension checked out and it was OK and they confirmed the tyres were in good condition. They did mention that all aggressive-tread patterned tyres are harder to balance - He likened it to a 50p piece v a 10p piece - there are centres of mass across the surface in offroad rubber that aren't there on standard tyres which are more truly round.

As I say, swapping to the Vredsteins made it all go away and of course if I was mud plugging or laning up to livestock, I'd use something else.

[leighh]

Leighh did you ever find the problem with your steering?

I have the same problem around 50mph -60mph, i am running a 2" suspension lift (Ranchos) and 265/75/16 BFG A/T on 8" rims with -32 offset.
I have also just replaced the steering rack bushes but did'nt solve the problem.

Anybody else experience similar problems and may be able to help i would appreciate it.
Anto

Not really, I'm afraid. I think in my case it is most likely down to the sidewall flex on my muds. That's what Tony reckoned anyway. I got used to it in the end though - I barely notice it any more.

[TonyN]

You do get used to it, its why manufactureres don't fit Mud Terrains from the factory, they arn't that stable on the road.

BFG M/T's where probably the best road mannered M/T's I've used, these Grabbers where surprisingly noisy too IMHO, being a new design I thought they'd be quieter, but all is forgiven when you get offroad.

I've always used A/T's on my trucks, and fitted a set of Boggers or PitBulls for when doing more serious playing just for that trip.

[Antob]

I'm running A/T not M/T but them also been a heavy tyre aswel and slightly chunky pattern I'm probably also getting flex in my side wall.

I guess I can learn to live with the wobble if it can't be fixed.Il be getting my mechanic to take a look soon and will post any updates if we find the problem.