|optimum tire pressure for 190 lb rider||lendog|
Sep 8, 2003 9:21 AM
I have been riding the road bike for about 5 months now and have been using 120 psi front and back. I weigh 185 - 190 lbs. and was wondering if this is too much air?? I have not flated yet after 1000 miles on the bike, but was wondering what different pressures would due for performance, safety, etc...
Thanks for the feedback!
|Sounds Right||Fred Fredricks|
Sep 8, 2003 9:51 AM
|I'm 180 but with a 23 pound bike it's about the same. I run 23 cm at 125 (145 on race day &/or smooth courses).
Again, no problems. Bike handles good (except when those pesky squirrels decide to commit suicide by jumping under my wheels).
At our weight, make certain your pressure is up to 120 before every ride. I don't think you or I should run a tire any smaller. (But I am toying with the idea of putting a 21 cm up front on my aero race wheels).
|re: optimum tire pressure for 190 lb rider||JimP|
Sep 8, 2003 10:19 AM
The 120 is a good starting point for your (my) weight. The question is "How low can you go" without getting pinch flats? If the road surface is smooth, you can run at around 100 and the lower pressure will allow the tire to absorb more vibration without too much increased drag. If you place a 23mm tire on the front and a 25mm on the back, you should be able to run at about 110 without too many problems. If you ride on really rough road surfaces, you will have to have higher pressures to avoid the pinch flats.
|NO flats in 1000mi? Jeez, I had three Saturday.||retro|
Sep 8, 2003 10:20 AM
|This is just general b!tiching...I'm always shocked when I hear people say they've ridden for thousands of miles or X number of years without a flat. Here in the land of Big Thorns and teen-age kids who throw their empties out on the side of the road on Friday night, I average more than one every 100 miles. Record is six on a single ride (first 10 miles of a century; no PR that day), and three on my 11-mile commute. How do you people DO it?
Your tire pressures sound fine if you're running skinny rubber. At your weight, I'd probably use bigger tires and less air (28s at 105 or so). But what do I know? My tires don't have any air in them at all.
|depends on the tire||ColnagoFE|
Sep 8, 2003 10:25 AM
|I weigh about the same and run anywhere from 100-120 on my Conti GP 3000s. Anything less feels mushy to me.|
|re: optimum tire pressure for 190 lb rider||stratoshark|
Sep 8, 2003 10:51 AM
|I'm in the same weight range. Currently, I run 115-120 on front, 120-125 on rear, using Conti GP3000. With Mich Axial Carbons, I run about 5 lbs less. On my beater, I run Conti Sport100 at around 100-105, but they are 28 width.
In the past, I ran the GP3000 at 130 front and back. Decided to run lower pressure for more comfort, and I've had no problems, plus I think they handle better at the lower numbers.
|Clincher at 145?????? Man...||No_sprint|
Sep 8, 2003 11:12 AM
|I weigh significantly less than you. Anyway that's somewhat irrelevant here. I would never consider running any clincher at 145. I run my race day tubies at 140 and have no tire deformation.
On hot days and/or with a lot of braking or hot road, the air should expand too. You could be getting that clincher 35 or 40 pounds more than the maximum recommendation. I don't do that with any tire.
|asking for a blowoff at that pressure (nm)||ColnagoFE|
Sep 8, 2003 1:06 PM
|Exact same weight as me. 120 all around w/ my Panaracers.||KG 361|
Sep 8, 2003 3:15 PM
|I only inflate to 100 on my commuter/rain bike. The recommended psi is that on the tires I have on it, plus the Arroya rims won't hold any more than that. The panaracers, however, are rated to 145.|
|re: optimum tire pressure for 190 lb rider||Cary1|
Sep 8, 2003 3:22 PM
|I weigh 215 on Conti GP 3000 25mm tires and run 100-105 front and 105-110 on the rear. I have not had any trouble with pinch flatting.
(Knock on Wood)
|Whatever the max tire pressure is for the tire.||270bullet|
Sep 8, 2003 4:29 PM
|A maxed out tire = less rolling resistance = faster ride. I always max out the pressure before every ride. I'm 230lbs and flat rarely. Why introduce rolling resistance by underinflating? You want a coosh ride? buy suspension :)|
|120psi. Never a pinch flat. (NM)||High Gear|
Sep 8, 2003 6:29 PM
|thanks for the feedback. I'll leave it at 120. (nm)||lendog|
Sep 9, 2003 7:26 AM