lowbrow Posted September 20, 2011 Report Share Posted September 20, 2011 (edited) Nothing to do with the band as the 4 i know about all have 2011 Gas Gas's on DID rims. They only go flat when riding sections or between sections. They stay up all week if just sat in the garage or a old bath... That's been my experience too. Also true of new IRC's fitted to older rims that have given no trouble with IRC tyres in the past; however it's always been the case that they've tended to lose pressure if you hit something really hard. Edited September 20, 2011 by Lowbrow Quote Link to comment Share on other sites More sharing options...
sam_w Posted September 20, 2011 Report Share Posted September 20, 2011 Hi I've had the same problem with an IRC going flat as soon as you hit even the smallest of steps. I switched to a Michelin X-lite and have had no problems. The bike is a Scorpa which is virtually new and the rear wheel is completely true. I took the tyre back to the dealer, BVM, and they admitted that they have had loads of returned IRC tyres. The rumour is that the latest batch of IRCs bought into the UK have some kind of problem. Some are Ok but many aren't. Quote Link to comment Share on other sites More sharing options...
telecat Posted September 20, 2011 Report Share Posted September 20, 2011 Had this problem for a couple of years until we switched to a DID rim. In our case it went down slowly though so could be different. One thing I have heard is that IRC are not cleaning the Mould "swarf" off the tyre bead so that a seal cannot be held properly. Those who "know" are using a dremmel to clean this off. Quote Link to comment Share on other sites More sharing options...
lowbrow Posted September 20, 2011 Report Share Posted September 20, 2011 Had this problem for a couple of years until we switched to a DID rim. In our case it went down slowly though so could be different. One thing I have heard is that IRC are not cleaning the Mould "swarf" off the tyre bead so that a seal cannot be held properly. Those who "know" are using a dremmel to clean this off. Interesting point and that's not something I've noticed, but as others have said these tyres will remain inflated until the bike is ridden. Quote Link to comment Share on other sites More sharing options...
t-shock 250 Posted September 20, 2011 Report Share Posted September 20, 2011 I have found a better way to find very slow leaks is to mix up some fairy liquid & water in a spray bottle, spray all over the tyre, rim & spoke nipples then go off for cup of tea. Afterwards you should see a cluster of bubbles where the leak is. It is quite hard to spot a small leak using a bath of water. Quote Link to comment Share on other sites More sharing options...
huski Posted September 20, 2011 Report Share Posted September 20, 2011 you're not alone with this one,some of the local riders have had this.One of them measured the diameter of the tyre where it touches the rim,and told me it was 4mm larger than the old tyre.He was refunded,you might like to measure your tyre and compare.Shame cos irc is the best for our conditions. Quote Link to comment Share on other sites More sharing options...
rev3chris Posted September 20, 2011 Report Share Posted September 20, 2011 Try using tyre soap and then pump it up to 25psi and leave for about 5 days. This is what i do when i change a tyre, never had a problem. I only use IRC's. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted September 20, 2011 Report Share Posted September 20, 2011 (edited) Already done all this as I said in my thread. my mistake i thought you said it went down when you dropped the pressure to 4, just before riding. SO, if you leave it at 4 in the garage for a day or so does it drop or not? if all the guys are saying its an irc problem best do some measuring or put the old one back on? Edited September 20, 2011 by Nigel Dabster Quote Link to comment Share on other sites More sharing options...
curt531 Posted September 20, 2011 Author Report Share Posted September 20, 2011 my mistake i thought you said it went down when you dropped the pressure to 4, just before riding. SO, if you leave it at 4 in the garage for a day or so does it drop or not? if all the guys are saying its an irc problem best do some measuring or put the old one back on? I've left the tyre inflated to 30 psi,10 psi & 4 psi all over the space of a week & it does'nt loose a jot of air untill you ride it, even riding about outside my house will see it go down ! Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted September 20, 2011 Report Share Posted September 20, 2011 I've left the tyre inflated to 30 psi,10 psi & 4 psi all over the space of a week & it does'nt loose a jot of air untill you ride it, even riding about outside my house will see it go down ! that is unusual as if it holds at 4 it usually holds when riding. Quote Link to comment Share on other sites More sharing options...
mattholmes Posted September 20, 2011 Report Share Posted September 20, 2011 (edited) Mine was same as you curt531 ended up putting old tyre back on :-( but due a new one soon so fingers crossed going for a mich this time same as what's supplied with bike so fingers crossed Edited September 20, 2011 by mattholmes Quote Link to comment Share on other sites More sharing options...
curt531 Posted September 21, 2011 Author Report Share Posted September 21, 2011 well took my wheel back to the shop where i got the tyre from today, Leisure Trail in Long Eaton & credit where credit is due, after a little discussion they agreed to removed it from my wheel & fitted a new one free of charge,many thanks guys, we will see how I get on with it, I really hope that sorts it as the tyre did work quite well. Quote Link to comment Share on other sites More sharing options...
mattholmes Posted September 21, 2011 Report Share Posted September 21, 2011 you're not alone with this one,some of the local riders have had this.One of them measured the diameter of the tyre where it touches the rim,and told me it was 4mm larger than the old tyre.He was refunded,you might like to measure your tyre and compare.Shame cos irc is the best for our conditions. Just measured my IRC that I kept when I swapped back to mich it also would leak when I rode it and it too is 4mm bigger at the point that touches the rim think I will be back to shop at weekend to see if anything can be done ??? Quote Link to comment Share on other sites More sharing options...
curt531 Posted September 25, 2011 Author Report Share Posted September 25, 2011 well rode the bike with the other new tyre on, fitted by Leasure Trail using a Putoline rim sealing compound, gave it 48 hours at 20 psi before I rode it as the guy who fitted it suggested & guess what, 20 minutes & it's flat . I can't beleive that it could be a second tyre faulty, but it does not go down until you ride it.Going to put my old Mich back on today & see what happens, this is realy doing my head in now.Friend of mine with the same bike has bought an IRC & has had no problems, only difference is I have the Morad rear rim & he has the DID, must be the Morad rims ? Quote Link to comment Share on other sites More sharing options...
lowbrow Posted September 25, 2011 Report Share Posted September 25, 2011 well rode the bike with the other new tyre on, fitted by Leasure Trail using a Putoline rim sealing compound, gave it 48 hours at 20 psi before I rode it as the guy who fitted it suggested & guess what, 20 minutes & it's flat . I can't beleive that it could be a second tyre faulty, but it does not go down until you ride it.Going to put my old Mich back on today & see what happens, this is realy doing my head in now.Friend of mine with the same bike has bought an IRC & has had no problems, only difference is I have the Morad rear rim & he has the DID, must be the Morad rims ? Swap your IRC for the one your mate has and see what happens. I'd bet against your tyre rather than the rim. Quote Link to comment Share on other sites More sharing options...
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