New wheels, new tires (difference between 700x25, 26, & 28?) - Page 6 - Cycling Mob: Road Cycling, Mountain Biking and More

06-15-2004, 07:53 PM

>I'm 230-250. I've ridden 25 to 37. The problem with the weight and high
>pressure is that it puts a lot of strain on the wheels over bumps. Low
>pressure gives flats, high pressure breaks wheels.

I did not have a problem with bumps but the sidewalls would shred if I did not
keep them at 120. so I learned fast to keep the max pressure.

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06-15-2004, 08:03 PM

"David L. Johnson" <[Only registered and activated users can see links. ]> wrote
>
> Yes, but. Thing is, a bigger tire does not need, and usually is not rated
> for, as high a pressure as the skinnier tire. So, riding each tire at the
> rated max pressure, the skinny one will have less rolling resistance.

Yes but...the original comparison was between tires of the same construction
and pressure, but different sizes.

Hard to find that combination, maybe, but there it is.

Pete

06-15-2004, 08:03 PM

"David L. Johnson" <[Only registered and activated users can see links. ]> wrote
>
> Yes, but. Thing is, a bigger tire does not need, and usually is not rated
> for, as high a pressure as the skinnier tire. So, riding each tire at the
> rated max pressure, the skinny one will have less rolling resistance.

Yes but...the original comparison was between tires of the same construction
and pressure, but different sizes.

Hard to find that combination, maybe, but there it is.

Pete

06-15-2004, 08:03 PM

"David L. Johnson" <[Only registered and activated users can see links. ]> wrote
>
> Yes, but. Thing is, a bigger tire does not need, and usually is not rated
> for, as high a pressure as the skinnier tire. So, riding each tire at the
> rated max pressure, the skinny one will have less rolling resistance.

Yes but...the original comparison was between tires of the same construction
and pressure, but different sizes.

Hard to find that combination, maybe, but there it is.

Pete

06-15-2004, 08:03 PM

"David L. Johnson" <[Only registered and activated users can see links. ]> wrote
>
> Yes, but. Thing is, a bigger tire does not need, and usually is not rated
> for, as high a pressure as the skinnier tire. So, riding each tire at the
> rated max pressure, the skinny one will have less rolling resistance.

Yes but...the original comparison was between tires of the same construction
and pressure, but different sizes.

Hard to find that combination, maybe, but there it is.

Pete

06-15-2004, 08:03 PM

"David L. Johnson" <[Only registered and activated users can see links. ]> wrote
>
> Yes, but. Thing is, a bigger tire does not need, and usually is not rated
> for, as high a pressure as the skinnier tire. So, riding each tire at the
> rated max pressure, the skinny one will have less rolling resistance.

Yes but...the original comparison was between tires of the same construction
and pressure, but different sizes.

Hard to find that combination, maybe, but there it is.

Pete

06-15-2004, 08:09 PM

> > I am not sure, but when I replace my 25's, I will be looking at maximum
> > pressure. I like to ride a hard tire personally. 120+. I don't like
to
> > get flats and I have had no problems with my 25's. I have had 20 and
even
> > 19's many years ago and they were a real pain in the butt. Flats all
the
> > time.
> >
> > I guess what I am saying is though, tire pressure is important as well,
> > IMHO.
>
> I'm 230-250. I've ridden 25 to 37. The problem with the weight and high
> pressure is that it puts a lot of strain on the wheels over bumps. Low
> pressure gives flats, high pressure breaks wheels.
>
> Wheels and components and builds come in different qualities. Just like
28c
> tires could be very different, so could 36 spoke wheels. Some are very
weak,
> some, very strong.
>
> Doug

Interesting. I never thought of that. I hope my rims are strong????? They
are Campagnolo 6082 alloy t-6's. Who knows?

Thanks for bringing that up. I probably should do some more research on
this subject.
Curt

06-15-2004, 08:09 PM

> > I am not sure, but when I replace my 25's, I will be looking at maximum
> > pressure. I like to ride a hard tire personally. 120+. I don't like
to
> > get flats and I have had no problems with my 25's. I have had 20 and
even
> > 19's many years ago and they were a real pain in the butt. Flats all
the
> > time.
> >
> > I guess what I am saying is though, tire pressure is important as well,
> > IMHO.
>
> I'm 230-250. I've ridden 25 to 37. The problem with the weight and high
> pressure is that it puts a lot of strain on the wheels over bumps. Low
> pressure gives flats, high pressure breaks wheels.
>
> Wheels and components and builds come in different qualities. Just like
28c
> tires could be very different, so could 36 spoke wheels. Some are very
weak,
> some, very strong.
>
> Doug

Interesting. I never thought of that. I hope my rims are strong????? They
are Campagnolo 6082 alloy t-6's. Who knows?

Thanks for bringing that up. I probably should do some more research on
this subject.
Curt

06-15-2004, 08:09 PM

> > I am not sure, but when I replace my 25's, I will be looking at maximum
> > pressure. I like to ride a hard tire personally. 120+. I don't like
to
> > get flats and I have had no problems with my 25's. I have had 20 and
even
> > 19's many years ago and they were a real pain in the butt. Flats all
the
> > time.
> >
> > I guess what I am saying is though, tire pressure is important as well,
> > IMHO.
>
> I'm 230-250. I've ridden 25 to 37. The problem with the weight and high
> pressure is that it puts a lot of strain on the wheels over bumps. Low
> pressure gives flats, high pressure breaks wheels.
>
> Wheels and components and builds come in different qualities. Just like
28c
> tires could be very different, so could 36 spoke wheels. Some are very
weak,
> some, very strong.
>
> Doug

Interesting. I never thought of that. I hope my rims are strong????? They
are Campagnolo 6082 alloy t-6's. Who knows?

Thanks for bringing that up. I probably should do some more research on
this subject.
Curt

06-15-2004, 08:09 PM

> > I am not sure, but when I replace my 25's, I will be looking at maximum
> > pressure. I like to ride a hard tire personally. 120+. I don't like
to
> > get flats and I have had no problems with my 25's. I have had 20 and
even
> > 19's many years ago and they were a real pain in the butt. Flats all
the
> > time.
> >
> > I guess what I am saying is though, tire pressure is important as well,
> > IMHO.
>
> I'm 230-250. I've ridden 25 to 37. The problem with the weight and high
> pressure is that it puts a lot of strain on the wheels over bumps. Low
> pressure gives flats, high pressure breaks wheels.
>
> Wheels and components and builds come in different qualities. Just like
28c
> tires could be very different, so could 36 spoke wheels. Some are very
weak,
> some, very strong.
>
> Doug

Interesting. I never thought of that. I hope my rims are strong????? They
are Campagnolo 6082 alloy t-6's. Who knows?

Thanks for bringing that up. I probably should do some more research on
this subject.
Curt