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Balancing 275/45-20 GGAT3
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PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4
Balancing 275/45-20 GGAT3

Hello,
I just put a set of new 275/45-20 GGAT3:s on my D4. Rims are the LR 511. I now get vibrations at speeds above 110-115 km/h (70 mph). I have been back and they have redone the balancing but no difference. The tyre place is well known and I have been good to me in the past. Old tyres didn´t have these problems. They claim it mioght be the more "off roady" pattern that causes this. The vibrations get better with more pressure in the tyres but not perfect. The weights used are the glue on type on the inside of the rims and they have been using quite a number of them as well.

Would it be expected to get some vibrations with AT tyres or are they known to be difficult to balance? Would it be better to let them put weights on the outside as well? Other tricks?

All ideas are aprreciated!

//Peter
 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep 
 
Post #204940429th Apr 2019 7:55 am
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nearlee
 


Member Since: 15 Dec 2012
Location: where the sheep are scared
Posts: 1777

Wales 2005 Discovery 3 TDV6 S Auto Bonatti GreyDiscovery 3

Might not help much, but I have same tyre in same size on my full fat and the fitters never mentioned excess weights, in fact doesn't look like many on mine, no vibration but I do run them quite hard, 41 psi might make a difference.
 Just remember:-
Amateurs built the Ark
Professionals built the titanic 
 
Post #204942729th Apr 2019 9:43 am
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J@mes
 


Member Since: 10 Nov 2008
Location: Bomber County
Posts: 4544

England 2014 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

Are they balancing them on both sides of the wheel? As in the face and the rear?

I had the excuse of tread pattern when a garage couldn't balance my Duratracs and they vibrated at 60mph.

I took them to another tyre fitter, they told me they needed balancing on both side of the wheels, did it, and they didn't shake at over 100mph. It was like driving on glass. Thumbs Up
 2014 D4 XS
2005 D3 SE - Gone 
 
Post #204946529th Apr 2019 11:54 am
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PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4

Thanks for your replies! I have 40-41 psi in the tyres already so I don´t really want to go higher. Tyres are only balanced on the inside of the rims. That was one of my thoughts to tell them to use the front of the wheel as well. Interesting that it worked for you James.

/Peter
 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep 
 
Post #204946729th Apr 2019 11:59 am
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Ken
  


Member Since: 20 Feb 2006
Location: Here
Posts: 10865




If these are the Offending items

They are not suitable for exterior clip weights interior only so

Are the sticky weights near the valve ?

Rotate tyre 180 degs re balance using stickies on the inner internal & clip weight in outer edges (nearest the strut )Thumbs Up
  
Post #204947629th Apr 2019 12:25 pm
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PeterTh
 


Member Since: 06 Sep 2013
Location: Alunda
Posts: 330

Sweden 2011 Discovery 4 3.0 TDV6 S Auto Orkney GreyDiscovery 4

Tyres are now balanced again. Tyre Company claims they were fine but agreed to redo them and they are now better.

//Peter
 2011 Discovery 4 3.0 TDV6 S Automatic
1999 Discovery 2 V8 ES Automatic

Earlier
2006 Discovery 3 TDV6 SE Automatic
1996 Discovery 300 Tdi ES Automatic
1975 Series 3 2.25 diesel

Nanocom Evolution for D2 V8, D3 and D4

Working kelpies for working the sheep
Dog Sheep Sheep Sheep Sheep Sheep Sheep 
 
Post #20515438th May 2019 10:24 am
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tony gt
 


Member Since: 29 Jul 2018
Location: cardiff
Posts: 10

Wales 2008 Discovery 3 TDV6 Base 7 Seat Auto Unknown ColourDiscovery 3
GG AT3's

Yesterday I fitted 4 GG AT3's in 275/45/20s to my D3. A well made robust, if a tad heavy tyre.
Pressured to 40 psi all round,
what a transformation to the ride and handling!
No vibration up to the legal 110 mph limit which is no doubt due to the excellent fitting and balancing by Dalcross tyres in Cardiff. All weights were applied on the inner rim.
Surprisingly very quiet on the motorway.
Better turn in due to the increased tyre wall stiffness over the cheap and cheerless Chinese predecessors.
Better grip on the green lane leading to madams stable.
No slip on the gravel bits up the steep hill, no spray of stones and mud down the side of the vehicle either.
Rides the bumps and pot holes really well despite the low profile.
Should also be better towing the boat to the sea edge due to the side lugs and better tread blocks.
Euro Ice rated to boot!
Okay, they are not BF Goodrich AT3's which I would have preferred but there are no 20 inch viable BFG options available, but all in all, gg AT3's are the best mid priced chunky around in my humble opinion.
 RR classic, dead in Ireland,
TD300, sold to a friend but totally restored,
TD5, gone but still going,
Ginetta G27 v8,
Porsche boxter,
low cost track car,
Disco 3 2008 
 
Post #206092313th Jun 2019 5:11 pm
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pope227
 


Member Since: 20 Jun 2012
Location: Boston
Posts: 339

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Causeway GreyDiscovery 4

Hi Tony. Just Gauging opinion as I would like the same tyre as you have here. Any drawbacks so far and are you as happy with them now as in Summer? They seem like the best all round. I had duratracs before but was disappointed on frosty roads as did not seem particularly sure footed. Thanks John.
 D4 HSE Luxury
Causeway Grey 
 
Post #21109525th Jan 2020 9:10 pm
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ronp
 


Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15208

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

Had my new GGAT3s fitted a few months back.
Running at std pressures and absolutely no issues with them.
(all you might get is an initial 'notchiness' as the new tread blocks "bed in" for the first 100 mikes or so).
Key is for the wheels/tyres to be balanced accurately and wheels torqued up correctly and ran at correct pressures.
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Post #21109645th Jan 2020 10:14 pm
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pope227
 


Member Since: 20 Jun 2012
Location: Boston
Posts: 339

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Causeway GreyDiscovery 4

Good to hear and I see from searching that you have good experience on differing tyre sizes Ron. Are the tyres you refer to here the 275/45-20? It time I bit the bullet - been tossing up these or cooper weathermaster in standard size but if you need off road ability on the odd occasion you need it. Thumbs Up
 D4 HSE Luxury
Causeway Grey 
 
Post #21109675th Jan 2020 10:40 pm
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tony gt
 


Member Since: 29 Jul 2018
Location: cardiff
Posts: 10

Wales 2008 Discovery 3 TDV6 Base 7 Seat Auto Unknown ColourDiscovery 3
GG AT3 s

Pope,
no issues with the gg on frost or in Brecon snow, on and off road.
Great launching the boat from a wet sandy beach. No issues driving through soft dunes on the way back to the road either.
Coincidentally madam just ripped the side wall out of one on a low wall Big Cry Sad Hardly any wear after 16,000 miles.
Ordered in a replacement and hope to fit asap.
Happy motoring, Tony
 RR classic, dead in Ireland,
TD300, sold to a friend but totally restored,
TD5, gone but still going,
Ginetta G27 v8,
Porsche boxter,
low cost track car,
Disco 3 2008 
 
Post #21110776th Jan 2020 12:37 pm
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ronp
 


Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15208

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

pope227 wrote:
Ron. Are the tyres you refer to here the 275/45-20?


Yes, that's the size. Thumbs Up
There are two ratings H & V - make sure you get the V rated ones.
https://www.generaltire-tyres.com/car/tyres/grabber-at3

285/50/20 tyres are possible but needs stops in the steering rack to stop "lock to lock" rubbing
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Post #21111106th Jan 2020 3:18 pm
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tony gt
 


Member Since: 29 Jul 2018
Location: cardiff
Posts: 10

Wales 2008 Discovery 3 TDV6 Base 7 Seat Auto Unknown ColourDiscovery 3

Ron,
I only have the H rated ones.
I accept the v rated are for higher speeds but not venturing much above the legal limit too often, and not knowing a lot about tyres, what's the difference please?
 RR classic, dead in Ireland,
TD300, sold to a friend but totally restored,
TD5, gone but still going,
Ginetta G27 v8,
Porsche boxter,
low cost track car,
Disco 3 2008 
 
Post #21111516th Jan 2020 5:18 pm
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ronp
 


Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15208

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

There's nothing wrong with the H ones, but difference is -

Speed: H - 130mph, V - 159mph.

Wet: H - E classification, V - C classification.

So if price is the same, I'd go for the V (as I have done).
But if you're running H, then it's still a great tyre. Thumbs Up
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Post #21111556th Jan 2020 5:32 pm
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pope227
 


Member Since: 20 Jun 2012
Location: Boston
Posts: 339

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Causeway GreyDiscovery 4

Great info all thank you. Had a response from Cooper that they don’t recommend their Weathermaster off road at all and not for mud etc. I know the D4 is capable but don’t want to hobble it if I need to be off road. GGat 3 it is and hopefully can give some feedback against Duratrac once been on a while. Thanks again.
 D4 HSE Luxury
Causeway Grey 
 
Post #21112236th Jan 2020 10:27 pm
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