|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
How critical is road bike tire pressure max?
Just received some 25mm Vee Rubber road tires and it says 7bar 100psi
max on the side. That's a bit low for my taste. The Zafiro I have on there now says 100psi min and 130psi max which is more up my alley. By how much can a low max rating be exceeded? I like 100-115psi on my road bike in back. On the front I won't exceed the max because a blow-out would be nasty and that carries less weight anyhow. -- Regards, Joerg http://www.analogconsultants.com/ |
Ads |
#2
|
|||
|
|||
How critical is road bike tire pressure max?
Is max pressure related to tpi?
|
#3
|
|||
|
|||
How critical is road bike tire pressure max?
On 2018-04-18 10:57, Earls61 wrote:
Is max pressure related to tpi? No idea but probably somewhat. It's the overall construction like thread anchoring, thread size and whatnot. My question is how much "wiggle room" they usually leave for the upper tolerance band. A blow-out is no fun. I had that on an MTB tire which was inflated to about 90% of max. It took out stuff on the rear of the bike and literally blew the rear light apart. -- Regards, Joerg http://www.analogconsultants.com/ |
#4
|
|||
|
|||
How critical is road bike tire pressure max?
On 4/18/2018 12:57 PM, Earls61 wrote:
Is max pressure related to tpi? Yes, and other factors (such as tpi of which material): http://file.scirp.org/pdf/WJET_2016051313584674.pdf There are 100+ years of study in that area -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#5
|
|||
|
|||
How critical is road bike tire pressure max?
On 18/04/2018 1:02 PM, Joerg wrote:
Just received some 25mm Vee Rubber road tires and it says 7bar 100psi max on the side. That's a bit low for my taste. The Zafiro I have on there now says 100psi min and 130psi max which is more up my alley. By how much can a low max rating be exceeded? I like 100-115psi on my road bike in back. On the front I won't exceed the max because a blow-out would be nasty and that carries less weight anyhow. Are these both the same size tire? 100 psi sounds right for 25mm tires. 100 - 130 psi sounds like 23mm. |
#6
|
|||
|
|||
How critical is road bike tire pressure max?
On 2018-04-18 12:13, Duane wrote:
On 18/04/2018 1:02 PM, Joerg wrote: Just received some 25mm Vee Rubber road tires and it says 7bar 100psi max on the side. That's a bit low for my taste. The Zafiro I have on there now says 100psi min and 130psi max which is more up my alley. By how much can a low max rating be exceeded? I like 100-115psi on my road bike in back. On the front I won't exceed the max because a blow-out would be nasty and that carries less weight anyhow. Are these both the same size tire? 100 psi sounds right for 25mm tires. 100 - 130 psi sounds like 23mm. They are both 25mm steel bead. Both are made in Thailand, the Zafiro at Lion Tyres and the other at Vee Rubber. They have a similar feel to them when grabbing the unmounted tire except that the lower pressure rated Vee Rubber has a slight tread pattern to it while the Zafiro is almost a slick. The side walls look and feel equally sturdy which is where my Conti Gatorskins often failed. Side walls are the main reason why I am looking for alternatives. -- Regards, Joerg http://www.analogconsultants.com/ |
#7
|
|||
|
|||
How critical is road bike tire pressure max?
On Wednesday, April 18, 2018 at 12:13:34 PM UTC-7, duane wrote:
On 18/04/2018 1:02 PM, Joerg wrote: Just received some 25mm Vee Rubber road tires and it says 7bar 100psi max on the side. That's a bit low for my taste. The Zafiro I have on there now says 100psi min and 130psi max which is more up my alley. By how much can a low max rating be exceeded? I like 100-115psi on my road bike in back. On the front I won't exceed the max because a blow-out would be nasty and that carries less weight anyhow. Are these both the same size tire? 100 psi sounds right for 25mm tires. 100 - 130 psi sounds like 23mm. And running the Zaffiro at maximum pressure results in really poor wet grip, speaking from experience. Also, why would Joerg want a HP 25mm tire in super-gnarlyville? With all the ad hoc trail riding and massive loads, he should have a 32mm tire minimum. And not a Zaffiro, which are flat-prone. If his bike won't accommodate a tire of that size, may that's a reminder that he's riding the wrong bike. As for the Vee Rubber, I wouldn't run a $10 25mm tire beyond its maximum recommended pressure. God knows whether the bead wire is any good or what pressure will blow-off the tire or blow-out the sidewalls -- or separate the bead wire from the sidewall. The thing would probably ride like a rock above 100psi anyway. -- Jay Beattie. |
#8
|
|||
|
|||
How critical is road bike tire pressure max?
On 2018-04-18 12:51, jbeattie wrote:
On Wednesday, April 18, 2018 at 12:13:34 PM UTC-7, duane wrote: On 18/04/2018 1:02 PM, Joerg wrote: Just received some 25mm Vee Rubber road tires and it says 7bar 100psi max on the side. That's a bit low for my taste. The Zafiro I have on there now says 100psi min and 130psi max which is more up my alley. By how much can a low max rating be exceeded? I like 100-115psi on my road bike in back. On the front I won't exceed the max because a blow-out would be nasty and that carries less weight anyhow. Are these both the same size tire? 100 psi sounds right for 25mm tires. 100 - 130 psi sounds like 23mm. And running the Zaffiro at maximum pressure results in really poor wet grip, speaking from experience. Also, why would Joerg want a HP 25mm tire in super-gnarlyville? With all the ad hoc trail riding and massive loads, he should have a 32mm tire minimum. And not a Zaffiro, which are flat-prone. So far so good. The ride on the Zafiro is a bit more bone-rattling than others but no flats. Part of my usual road bike valley route is gravel and old Lincoln highway which looks like a concrete runway after a bombing raid. I've got thick tubes plus liners in there though which affords me the option to ride just about any tire. ... If his bike won't accommodate a tire of that size, may that's a reminder that he's riding the wrong bike. I might get by with 28mm but only with absolutely zero wobble and that ain't gonna happen on any of my bikes. As for the Vee Rubber, I wouldn't run a $10 25mm tire beyond its maximum recommended pressure. God knows whether the bead wire is any good or what pressure will blow-off the tire or blow-out the sidewalls -- or separate the bead wire from the sidewall. The thing would probably ride like a rock above 100psi anyway. The Zafiro does ride like a rock. Being used to MTB riding that doesn't faze me. What puzzles me is it's impressive 130psi max rating (100psi is min). -- Regards, Joerg http://www.analogconsultants.com/ |
#9
|
|||
|
|||
How critical is road bike tire pressure max?
On 18/04/2018 3:51 PM, jbeattie wrote:
On Wednesday, April 18, 2018 at 12:13:34 PM UTC-7, duane wrote: On 18/04/2018 1:02 PM, Joerg wrote: Just received some 25mm Vee Rubber road tires and it says 7bar 100psi max on the side. That's a bit low for my taste. The Zafiro I have on there now says 100psi min and 130psi max which is more up my alley. By how much can a low max rating be exceeded? I like 100-115psi on my road bike in back. On the front I won't exceed the max because a blow-out would be nasty and that carries less weight anyhow. Are these both the same size tire? 100 psi sounds right for 25mm tires. 100 - 130 psi sounds like 23mm. And running the Zaffiro at maximum pressure results in really poor wet grip, speaking from experience. Also, why would Joerg want a HP 25mm tire in super-gnarlyville? With all the ad hoc trail riding and massive loads, he should have a 32mm tire minimum. And not a Zaffiro, which are flat-prone. If his bike won't accommodate a tire of that size, may that's a reminder that he's riding the wrong bike. As for the Vee Rubber, I wouldn't run a $10 25mm tire beyond its maximum recommended pressure. God knows whether the bead wire is any good or what pressure will blow-off the tire or blow-out the sidewalls -- or separate the bead wire from the sidewall. The thing would probably ride like a rock above 100psi anyway. Yeah, I'm mostly used to hearing people ask how low they can go and still avoid snakebites. I guess those gnarly country trails "out there" are better than our paved roads here in Quebec. |
#10
|
|||
|
|||
How critical is road bike tire pressure max?
On 2018-04-18 13:15, Duane wrote:
On 18/04/2018 3:51 PM, jbeattie wrote: On Wednesday, April 18, 2018 at 12:13:34 PM UTC-7, duane wrote: On 18/04/2018 1:02 PM, Joerg wrote: Just received some 25mm Vee Rubber road tires and it says 7bar 100psi max on the side. That's a bit low for my taste. The Zafiro I have on there now says 100psi min and 130psi max which is more up my alley. By how much can a low max rating be exceeded? I like 100-115psi on my road bike in back. On the front I won't exceed the max because a blow-out would be nasty and that carries less weight anyhow. Are these both the same size tire? 100 psi sounds right for 25mm tires. 100 - 130 psi sounds like 23mm. And running the Zaffiro at maximum pressure results in really poor wet grip, speaking from experience. Also, why would Joerg want a HP 25mm tire in super-gnarlyville? With all the ad hoc trail riding and massive loads, he should have a 32mm tire minimum. And not a Zaffiro, which are flat-prone. If his bike won't accommodate a tire of that size, may that's a reminder that he's riding the wrong bike. As for the Vee Rubber, I wouldn't run a $10 25mm tire beyond its maximum recommended pressure. God knows whether the bead wire is any good or what pressure will blow-off the tire or blow-out the sidewalls -- or separate the bead wire from the sidewall. The thing would probably ride like a rock above 100psi anyway. Yeah, I'm mostly used to hearing people ask how low they can go and still avoid snakebites. I guess those gnarly country trails "out there" are better than our paved roads here in Quebec. In California they just put a cone on there or slop some asphalt slurry in there, roll the truck across it a few times and call it a day. https://s.hdnux.com/photos/62/33/32/.../3/920x920.jpg "Your tax Dollars at work" -- Regards, Joerg http://www.analogconsultants.com/ |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Tubular tire advantage = able to run at high pressure or able to runat low pressure? | Sir Ridesalot | Techniques | 16 | May 10th 15 10:43 PM |
Tire pressure | Hydrophidian | Unicycling | 8 | May 24th 08 01:03 AM |
tire pressure | snowkel | Unicycling | 6 | August 5th 07 07:37 AM |
Tire pressure and bad bike shop advice. | [email protected] | General | 20 | March 14th 06 04:33 PM |
High pressure road tire for ATBs? | Techniques | 15 | December 9th 03 07:47 AM |