enduro1972uk Posted February 28, 2008 Share Posted February 28, 2008 I have a 2002 Discovery ES which i took for its test yesterday, when they checked the brakes on the rolling road brake tester (rollers) i asked if it was ok to do so. In the past i have been to two different test centres who have took the car out on the road and tested the brakes with some device they had with them. Can anyone point me in the right direction, is it ok to use the rolling road? If not could it have caused any damage to my car? Quote Link to comment Share on other sites More sharing options...
disco_al Posted February 28, 2008 Share Posted February 28, 2008 IIRC it's ok to use the RR as long as it doesn't exceed 5mph for about 30 secs? RAVE has the details Quote Link to comment Share on other sites More sharing options...
enduro1972uk Posted February 28, 2008 Author Share Posted February 28, 2008 IIRC it's ok to use the RR as long as it doesn't exceed 5mph for about 30 secs?RAVE has the details Thanks i will check it out. Quote Link to comment Share on other sites More sharing options...
Dorsetfreelander Posted February 28, 2008 Share Posted February 28, 2008 As far as Freelanders are concerned, I was told that you can't test cars with permanent 4 wheel drive properly on a rolling road since, for example, if you put the front wheels on the rollers then the back ones will try to drive the car forward or back and if you apply the handbrake to stop it then you get a false (high) reading for the front wheels. The place I go to for an MOT use the old fashioned brake meter on the floor. Similarly you can't recover a broken freelander by lifting the front wheels you either use a flat bed or tow it. Hope this helps. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted February 28, 2008 Share Posted February 28, 2008 You certainly can't use a two wheel RR with any vehicle with a viscous centre coupling/diff i.e. any Freelander or any late RRC with the BW transfer box. Not sure about later Range Rovers. Quote Link to comment Share on other sites More sharing options...
Orgasmic Farmer Posted February 28, 2008 Share Posted February 28, 2008 But they always do with my Subaru! Ne'er a problem either. But then they only test one wheel at a time so perhaps its oK Quote Link to comment Share on other sites More sharing options...
Steve 90 Posted February 28, 2008 Share Posted February 28, 2008 If it has a LT230 transfer box (which yours will have) its fine. Freelanders and Rangerovers with the borgwarner transfer box (viscous coupling) have to be teated with the Tapley meter on the road. The ctr diff on yours will be fine with this. The only issue would be Traction control playng up but the brake tester rollers only turn at 1.5mph so it doesn't effect it. Vosa did say that all L/R's should be teated on the road at one time because it was easier than listing which were OK and which wern't but now they say if they have an open ctr diff then they can be tested on the rollers. Quote Link to comment Share on other sites More sharing options...
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