60/65 psi on 25 mm tires?
10-02-21, 11:58 AM
#26
ಠ_ಠ
Gatorskins have a tougher carcass/tread section that may be less compliant over rough surfaces than a regular or lightweight tire. You compared your two bikes, but didn't mention how the frames are constructed. Different materials and designs transmit different levels of harshness to the rider. If you're going to replace tires, I too recommend 28s if there's enough clearance. Recently I ran some 23s at 90-100psi for an event and they transferred every bump no matter how small. They were fast though. Afterward I put 26s back on and will go up to 28 when those are spent. It's an aluminum bike that tends to be on the harsh side anyway.
If that's not good enough, perhaps look at a bike that can run 32-38.
If that's not good enough, perhaps look at a bike that can run 32-38.
10-02-21, 09:54 PM
#27
Junior Member
Both my bike are steel as in my list. A very old wheel(1987) with 28mm tire(lower pressure) ~= same comfort as 2005 wheel /25mm/higher pressure.
Ryan
Ryan
10-06-21, 03:48 PM
#29
Advocatus Diaboli
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10-06-21, 08:12 PM
#31
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At your weight + bike - 60+ should be fine ... only issue would be a sharp edge hit = snakebite pinch flat... but even that would be quite remote...
I weigh 150 lbs + bike weight with 2 full water bottles and saddle bag is prolly around 23 lbs. ttl , steel bike = 19.5 lbs (2x 22 oz water, 1lb. saddle bag, 8oz pump)
on 15mm internal rims... (Ritchey OCR aero) and, at the moment 700x23 tires.
Santa Barbara County roads are really quite crappy with unexpected holes, ridges, traps...
I use 75 lbs frt, 80 rr - no pinch flats - rides fine - doesn't ride slow... been using that for last 10+yrs ???
It also depends on the accuracy of your pump, many are not even close to the noted shown psi. Many actually show a 'lower' pressure than what the actual 'in-tire' is.
I would small incremental (2-3 lbs) increases until you get to a note 'uncomfortable' pressure, and then back down just a bit...
just an opinion...
Ride On
Yuri
I weigh 150 lbs + bike weight with 2 full water bottles and saddle bag is prolly around 23 lbs. ttl , steel bike = 19.5 lbs (2x 22 oz water, 1lb. saddle bag, 8oz pump)
on 15mm internal rims... (Ritchey OCR aero) and, at the moment 700x23 tires.
Santa Barbara County roads are really quite crappy with unexpected holes, ridges, traps...
I use 75 lbs frt, 80 rr - no pinch flats - rides fine - doesn't ride slow... been using that for last 10+yrs ???
It also depends on the accuracy of your pump, many are not even close to the noted shown psi. Many actually show a 'lower' pressure than what the actual 'in-tire' is.
I would small incremental (2-3 lbs) increases until you get to a note 'uncomfortable' pressure, and then back down just a bit...
just an opinion...
Ride On
Yuri
10-25-21, 03:36 PM
#32
Newbie
Worth noting I think that the Silca calculator is for measured tyre width, not the number it’s sold as.
Some brands are a couple of mm wider on most rims, may be more for modern wide rims.
If you measure and redo the calculation it’s probably correct for your usage anyway.
Some brands are a couple of mm wider on most rims, may be more for modern wide rims.
If you measure and redo the calculation it’s probably correct for your usage anyway.
