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Ady 555 Site Moderator Member Since: 12 Dec 2010 Location: Good old yorkshire Posts: 8738 ![]() ![]() ![]() |
Beancounter is an expert on this subject and i'm sure he will be along soon after his afternoon nap to advise. |
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flack Member Since: 24 Feb 2013 Location: Preston Posts: 379 ![]() |
Yes TTM is set to keep everything nice and tight during the 4 wheel alinement, once its put in to TTM you will get a red warning on the dash of an unstable car icon.
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RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 9028 ![]() ![]() ![]() |
Tight tolerance mode actually makes the suspension system work harder so that it sits more correctly. Trying to prevent the vehicle doing its thing is the wrong thing to do. 2012 SDV6 - it's missing a couple of cylinders 2008 TDV8 - it was a labour of love and is much missed |
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Bomber H Member Since: 17 Apr 2012 Location: Abingdon / Reading Posts: 200 ![]() |
The steering wheel on mine wasn't sitting quite straight, seemingly aiming a little to the right in order to go straight ahead, so I had the 4 wheel alignment done today, and its no better! ![]() Going back tomorrow to let them know. 2016 VW Golf GTD DSG 2007 Exige S British GT SE Gone : 2011 3.0TDV6 HSE, Stornoway Grey, Ivory, Piano Black Trim, Paddleshift, Privacy Glass, Side Steps, Mud Flaps, Heated Steering Wheel, Timed Climate & Remote Park Heating ![]() |
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Beancounter_74 Member Since: 11 Oct 2011 Location: Down here now... Posts: 5796 ![]() ![]() |
I've got to get my alignment done again soon as it seems to have drifted, will ask about the TTM.
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RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 9028 ![]() ![]() ![]() |
Camber, tow and wheelbase change with ride height. As the RRS has a large ride height range, there is an associated large change in camber etc. With the vehicle in normal tightness mode, the EAS allows the suspension to be within a fairly large tolerance in order to prevent the system working overtime to stay within tolerances i.e. it means the compressor doesn't have to run all of the time. In tight tolerance mode the system works hard to keep the suspension within much tighter tolerances.
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Beancounter_74 Member Since: 11 Oct 2011 Location: Down here now... Posts: 5796 ![]() ![]() |
Thanks RRSTDV8 |
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flack Member Since: 24 Feb 2013 Location: Preston Posts: 379 ![]() |
@RRSTDV8
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Beancounter_74 Member Since: 11 Oct 2011 Location: Down here now... Posts: 5796 ![]() ![]() |
Thanks Flack |
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Tony666 Member Since: 26 Jul 2011 Location: Barry Posts: 170 ![]() ![]() |
Ok, can anyone tell me what type of equipment is required to put the car into tight tolerance mode? |
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RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 9028 ![]() ![]() ![]() |
I believe the manufacturers of 4 wheel alignment systems (Pro-Align, Hunter Hawk etc.) do an add-on module for their systems that allows the technician to set the vehicle to TTM. How many tyre places bother to buy that module is the question. I guess you'll just have to phone around and ask. Alternatively, take your vehicle to a LR dealership - they will do the 4WA with it in TTM. How good a job they do is a moot point however.
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Ady 555 Site Moderator Member Since: 12 Dec 2010 Location: Good old yorkshire Posts: 8738 ![]() ![]() ![]() |
It seems that RRSTDV8 is the in house expert |
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RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 9028 ![]() ![]() ![]() |
Just passing on stuff I've picked up on my travels through t'web as I tried to figure out a tyre wear issue on my RRS. |
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flack Member Since: 24 Feb 2013 Location: Preston Posts: 379 ![]() |
It is because they are off road vehicles and the travel in the suspension when going off road is so big, they need this when the electronics kick in so the car can detect what to do at what corner when it is climbing or in ruts its all to do with center of gravity and keeping the car level as much as possible. Flack ![]() |
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