mataz Posted February 11, 2015 Share This is an email that was forwarded to me by a mate of mine, it is from Interac, who I see from their website are the agents for Continental tyres. I felt I needed to share, please enjoy... Regarding the use of low air pressures in MTB tyres, would you please pass the following on to your dealers and to cyclists in general, to make them aware of the fact that tyres submitted with damage caused by under inflation will be rejected. For guidance, the following should be noted: Assuming average rider weight of around 75kg, the following are recommended pressures for MTB tyres depending on width of the tyres: 2.0” 3.0 bars2.2” 2.5 bars2.4” 2.0 bars Under no circumstances should any tyres be run lower than 1.8 bars and that only on soft surfaces (ie beach sand). Tyres which are run below the recommended pressures are subjected to excessive sidewall flex and tread squirm. This will eventually lead to rapidly escalating material degradation of the tyre casing which will then display signs of excessive perishing in the rubber covering on the sidewalls. In cases of extended riding at lower than recommended inflation pressures, the threads in the tyre casing material will begin to separate and diagonal cracks will become visible in the sidewalls of the tyres. In some instances, tyre distortion or bubbling of the tread rubber will occur due to tread delamination from the casing. These are not material or manufacturing defects and there will be no warranty acceptance for tyres damaged by under inflation. Let me know if any further information is required regarding the fitting and use of tyres. I’ve attached a guide for fitting MTB tyres and the work can be tedious. However, correctly fitted tyres run at recommended pressures, will virtually eliminate the downtime caused by punctures, handling issues, and tyre degradation. Cheers Ray INTERAC Link to comment Share on other sites More sharing options...
Wil6 Posted February 11, 2015 Share Hahahaha 2.2" 2.5bars I ride them 1.6 front and 1.7/1.8 rear. Never had a tire fail on me. But tire pressures are rider dependent. Some like them a bit harder, and some like them a bit softer. nonky 1 Link to comment Share on other sites More sharing options...
Albatross Posted February 11, 2015 Share This is an email that was forwarded to me by a mate of mine, it is from Interac, who I see from their website are the agents for Continental tyres. I felt I needed to share, please enjoy... Regarding the use of low air pressures in MTB tyres, would you please pass the following on to your dealers and to cyclists in general, to make them aware of the fact that tyres submitted with damage caused by under inflation will be rejected. For guidance, the following should be noted: Assuming average rider weight of around 75kg, the following are recommended pressures for MTB tyres depending on width of the tyres: 2.0” 3.0 bars2.2” 2.5 bars2.4” 2.0 bars Under no circumstances should any tyres be run lower than 1.8 bars and that only on soft surfaces (ie beach sand). Tyres which are run below the recommended pressures are subjected to excessive sidewall flex and tread squirm. This will eventually lead to rapidly escalating material degradation of the tyre casing which will then display signs of excessive perishing in the rubber covering on the sidewalls. In cases of extended riding at lower than recommended inflation pressures, the threads in the tyre casing material will begin to separate and diagonal cracks will become visible in the sidewalls of the tyres. In some instances, tyre distortion or bubbling of the tread rubber will occur due to tread delamination from the casing. These are not material or manufacturing defects and there will be no warranty acceptance for tyres damaged by under inflation. Let me know if any further information is required regarding the fitting and use of tyres. I’ve attached a guide for fitting MTB tyres and the work can be tedious. However, correctly fitted tyres run at recommended pressures, will virtually eliminate the downtime caused by punctures, handling issues, and tyre degradation. Cheers Ray INTERAC thats a big fat assumption! Hairy 1 Link to comment Share on other sites More sharing options...
rouxtjie Posted February 11, 2015 Share Well that settles it for me, won't ever consider conti again maxxis / schwalbe ftw Captain Fastbastard Mayhem, Vangar, nonky and 1 other 4 Link to comment Share on other sites More sharing options...
MarcBurger Posted February 11, 2015 Share It's just a CYA (Cover your ass) release. Just in case someone feels that they want to claim for damages from improper use that wasn't written somewhere. nonky 1 Link to comment Share on other sites More sharing options...
Long Wheel Base Posted February 11, 2015 Share Sjoe those are pretty hard. They don't state what diameter tyre but regardless I have a 26er that I commute/train on with a 2.2 race king protection on the rear and it does mainly tar and pavement and at 2 bar I feel that's plenty hard for that terrain. If I had to go proper off road id drop the pressure. Even my maxxis monorail on the front gets pumped to 2 bar. Link to comment Share on other sites More sharing options...
Wil6 Posted February 11, 2015 Share It's just a CYA (Cover your ass) release. Just in case someone feels that they want to claim for damages from improper use that wasn't written somewhere. You're probably right. The one XCO World Cup Nino Schurter ran his tubbies 1.3 bar Long Wheel Base 1 Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted February 11, 2015 Share Well that settles it for me, won't ever consider conti again maxxis / schwalbe ftwSuper Gravity casing FTW. 105kg, 2 bar. rouxtjie 1 Link to comment Share on other sites More sharing options...
rouxtjie Posted February 11, 2015 Share It's just a CYA (Cover your ass) release. Just in case someone feels that they want to claim for damages from improper use that wasn't written somewhere. considering they can refuse a warranty as pointed out by our main man Ray, my money wont go their way Captain Fastbastard Mayhem 1 Link to comment Share on other sites More sharing options...
Plentipotential Posted February 11, 2015 Share I ride Conti, love the grip. 94kg's and 1.1 bar up front, 1.2 in the back, all off road. Never had a flat, touch wood. Link to comment Share on other sites More sharing options...
North Shore Posted February 11, 2015 Share I ride Conti, love the grip. 94kg's and 1.1 bar up front, 1.2 in the back, all off road. Never had a flat, touch wood.Do you go through rims faster than razor blades? That's extremely low for your weight and with jumps and rock strikes I can't see how your rims hold up on anything that involves any air time. Albatross, Hairy, GoLefty!! and 4 others 7 Link to comment Share on other sites More sharing options...
Cruz Addict Posted February 11, 2015 Share This is an email that was forwarded to me by a mate of mine, it is from Interac, who I see from their website are the agents for Continental tyres. I felt I needed to share, please enjoy... Regarding the use of low air pressures in MTB tyres, would you please pass the following on to your dealers and to cyclists in general, to make them aware of the fact that tyres submitted with damage caused by under inflation will be rejected. For guidance, the following should be noted: Assuming average rider weight of around 75kg, the following are recommended pressures for MTB tyres depending on width of the tyres: 2.0” 3.0 bars2.2” 2.5 bars2.4” 2.0 bars Under no circumstances should any tyres be run lower than 1.8 bars and that only on soft surfaces (ie beach sand). Tyres which are run below the recommended pressures are subjected to excessive sidewall flex and tread squirm. This will eventually lead to rapidly escalating material degradation of the tyre casing which will then display signs of excessive perishing in the rubber covering on the sidewalls. In cases of extended riding at lower than recommended inflation pressures, the threads in the tyre casing material will begin to separate and diagonal cracks will become visible in the sidewalls of the tyres. In some instances, tyre distortion or bubbling of the tread rubber will occur due to tread delamination from the casing. These are not material or manufacturing defects and there will be no warranty acceptance for tyres damaged by under inflation. Let me know if any further information is required regarding the fitting and use of tyres. I’ve attached a guide for fitting MTB tyres and the work can be tedious. However, correctly fitted tyres run at recommended pressures, will virtually eliminate the downtime caused by punctures, handling issues, and tyre degradation. Cheers Ray INTERAC thanks for forwarding on, interesting but thats a complete load of crap!!it is a surefire way to get out of ever taking any kind of responsibility for goods supplied.i found a very interesting article by an engineer on proper tire inflation, no he doesnt work for Conti but has consulted with them in the past from what info i can find.here is a link to the doc. http://www.bccclub.org/documents/Tireinflation.pdf rouxtjie 1 Link to comment Share on other sites More sharing options...
rouxtjie Posted February 11, 2015 Share thanks for forwarding on, interesting but thats a complete load of crap!!it is a surefire way to get out of ever taking any kind of responsibility for goods supplied.i found a very interesting article by an engineer on proper tire inflation, no he doesnt work for Conti but has consulted with them in the past from what info i can find.here is a link to the doc. http://www.bccclub.org/documents/Tireinflation.pdfexactly, if that is their stance and confidence in their product, well then sorry conti, you just lost me as a customer Cruz Addict 1 Link to comment Share on other sites More sharing options...
NotSoBigBen Posted February 11, 2015 Share What's this BAR stuff you okes are on about, isn't that where drinks are served *confused* Captain Fastbastard Mayhem, Vangar, Pete the Pirate and 1 other 4 Link to comment Share on other sites More sharing options...
GoLefty!! Posted February 11, 2015 Share This is an email that was forwarded to me by a mate of mine, it is from Interac, who I see from their website are the agents for Continental tyres. I felt I needed to share, please enjoy... Regarding the use of low air pressures in MTB tyres, would you please pass the following on to your dealers and to cyclists in general, to make them aware of the fact that tyres submitted with damage caused by under inflation will be rejected. For guidance, the following should be noted: Assuming average rider weight of around 75kg, the following are recommended pressures for MTB tyres depending on width of the tyres: 2.0” 3.0 bars2.2” 2.5 bars2.4” 2.0 bars Under no circumstances should any tyres be run lower than 1.8 bars and that only on soft surfaces (ie beach sand). Tyres which are run below the recommended pressures are subjected to excessive sidewall flex and tread squirm. This will eventually lead to rapidly escalating material degradation of the tyre casing which will then display signs of excessive perishing in the rubber covering on the sidewalls. In cases of extended riding at lower than recommended inflation pressures, the threads in the tyre casing material will begin to separate and diagonal cracks will become visible in the sidewalls of the tyres. In some instances, tyre distortion or bubbling of the tread rubber will occur due to tread delamination from the casing. These are not material or manufacturing defects and there will be no warranty acceptance for tyres damaged by under inflation. Let me know if any further information is required regarding the fitting and use of tyres. I’ve attached a guide for fitting MTB tyres and the work can be tedious. However, correctly fitted tyres run at recommended pressures, will virtually eliminate the downtime caused by punctures, handling issues, and tyre degradation. Cheers Ray INTERAC I completely agree and have always advised pressures in these ranges due to the reasons given.There are a lot of tyre bead failures and riders blaming the tyre when they have uninflated it. Link to comment Share on other sites More sharing options...
GoLefty!! Posted February 11, 2015 Share You're probably right. The one XCO World Cup Nino Schurter ran his tubbies 1.3 bar those tubbies are designed to be run at those pressures Link to comment Share on other sites More sharing options...
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