Pelico Posted November 24, 2003 Share Posted November 24, 2003 Quick easy question. Just bit the bullet and replaced my 15' Prisoners with 13in Minators and 185/70/13 A021s from Polley. Forgot to ask him, are they directional so will I need to be aware of which corner I bolt them to ? L811 VTR BRG/Yellow SuperSport Link to comment Share on other sites More sharing options...
robmar Posted November 24, 2003 Share Posted November 24, 2003 yes I think they are Link to comment Share on other sites More sharing options...
Pelico Posted November 24, 2003 Author Share Posted November 24, 2003 Thanks Robmar. I guess the follow-up questions is...are they obviously marked ? Any potential pitfalls ? Cheers L811 VTR BRG/Yellow SuperSport Link to comment Share on other sites More sharing options...
Tony C Posted November 24, 2003 Share Posted November 24, 2003 Mine have rows of arrows moulded into the sidewall. I seem to remember Peter C saying that it's "possible" to use them rotating in either direction though - probably worth a search in the archive 😬 BRG Brooklands SV 😬 It is only with the heart that one can see rightly; what is essential is invisible to the eye. (Antoine de Saint-Exupery) Edited by - Tony C on 24 Nov 2003 11:21:27 Link to comment Share on other sites More sharing options...
Graham Sewell Posted November 24, 2003 Share Posted November 24, 2003 From memory - if you are using them on the track and demand 100% from them - reverse the front pair to run backwards. The tread in non-directional but the carcass is marginally. For road use (especially for MOTs) put them on with the arrows pointing the 'correct' way. Low tech luddite - xflow and proud! Link to comment Share on other sites More sharing options...
Leadership Team Mcalvert Posted November 24, 2003 Leadership Team Share Posted November 24, 2003 Yes, they are clearly marked. It's worth a search through the archives as this has created quite a lot of discussion in the past. The concensus (backed up by a brochure from Yoko that I now cannot find) is that for rer wheel drive cars, the rear tyres go on the "right way" in relation to the directional arrows, and the front ones go on the "wrong" way. Regards, Michael. Link to comment Share on other sites More sharing options...
Pelico Posted November 24, 2003 Author Share Posted November 24, 2003 Gosh. Thanks everyone, I did not realise that this was a past hot topic. A quick scan of the archives suggests that the rears go on the right way round (main stress is acceleration) but the fronts go backwards (the main stress is braking) Although the consensus seemed to be that in normal road use the difference would be small. L811 VTR BRG/Yellow SuperSport Edited by - Pelico on 24 Nov 2003 11:57:32 Link to comment Share on other sites More sharing options...
Martin H Posted November 24, 2003 Share Posted November 24, 2003 Bugger ❗ Forgot about that, and now I've got mine nicely bedded in the "wrong" way round for the track. Link to comment Share on other sites More sharing options...
Tony C Posted November 24, 2003 Share Posted November 24, 2003 Just swap the front wheels over 😬 BRG Brooklands SV 😬 It is only with the heart that one can see rightly; what is essential is invisible to the eye. (Antoine de Saint-Exupery) Link to comment Share on other sites More sharing options...
Drumster Posted November 24, 2003 Share Posted November 24, 2003 My front's are 'reversed'. Never had any problems at MOT time (but then again it is a 7-friendly MOT centre 😬) Chris Alston www.C7CAT.com 1800 Supersprint Drive it like you stole it! 😬 Link to comment Share on other sites More sharing options...
Alias Posted November 25, 2003 Share Posted November 25, 2003 Sorry to ask a blatantly obvious question - why would you reverse the pattern direction on the front wheels? One car - 1400 Supersport with 6 gears and clamshell wings. Link to comment Share on other sites More sharing options...
dino ferrana Posted November 26, 2003 Share Posted November 26, 2003 The tires are desingned to give more grip in one direction. For the rears you want the max grip in the direction they turn when power is applied. For the fronts there may be a marginal gain in braking by reversing the pattern so the max grip is when braking. Link to comment Share on other sites More sharing options...
PACR Posted November 26, 2003 Share Posted November 26, 2003 I thought it was the carcass construction is better suited in one direction to take account of loading - drive at rear and braking at front hence opposite directions. Most directional tread patterns will be for rain clearing - dangerous to put these reversed if you venture out in the rain standing water. The small possible benefit of a better suited carcass will be lost when you aquaplane off the road track! AFAIK 21s have a non-directional 'pattern' so you can bias them for the carcass if you wish with little effect on water clearing properties. PACR Link to comment Share on other sites More sharing options...
Richard_E Posted November 26, 2003 Share Posted November 26, 2003 Mine passed an MOT with the arrows facing the wrong way. The MOT man spotted this but said since the pattern was non directional it did not matter. Link to comment Share on other sites More sharing options...
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