wider tires 23 to 32

[Beaver]

With wide rims and steep sidewalls, the ride will suffer.

That's why you should reduce the tire pressure - and in this case without resulting in higher rolling resistance.

Only go for rims as wide as your tires if you value aerodynamics above everything.

For the last few watts at 45km/h when 450 watts are needed overall (no wind, in the drops).

[eforce123]

So I should stick with my 23c tires I have now or jump to 25 and adjust air pressure

[mpulsiv]

So I should stick with my 23c tires I have now or jump to 25 and adjust air pressure

Not all tires are created equal. Just becasue you switch to wider tire, it doesn't mean it will roll better or be more supple.
Get a pair of Panaracer Evo A tire in 28mm and inflate to 70 psi www.excelsports.com/main.asp?page=8&des ... 1&minor=27.

The ride quality and rolling resistance will blow your mind and your 23mm will end up in the trash bag.

[eforce123]

So I should stick with my 23c tires I have now or jump to 25 and adjust air pressure

Not all tires are created equal. Just becasue you switch to wider tire, it doesn't mean it will roll better or be more supple.
Get a pair of Panaracer Evo A tire in 28mm and inflate to 70 psi www.excelsports.com/main.asp?page=8&des ... 1&minor=27.

The ride quality and rolling resistance will blow your mind and your 23mm will end up in the trash bag.

Should I go 25mm or 28mm? thank you for the help everyone

[AJS914]

It depends on what fits on your bike, the width of your rims, and what you are trying to achieve.

I tried 25mm GP 4000s on old school 15C rims a while back. Those tires measured 27-28mm and looked like light bulbs on those rims. It felt a little wishy washy and imprecise so I went back to the 23mm GP4000.

If you have wider rims and ride on rough roads I'd go with the widest tire you can get away with at a lower pressure.

Start with 80-100psi on your current tires and go from there. That will be a huge improvement over 125psi.

[mpulsiv]

So I should stick with my 23c tires I have now or jump to 25 and adjust air pressure

Not all tires are created equal. Just becasue you switch to wider tire, it doesn't mean it will roll better or be more supple.
Get a pair of Panaracer Evo A tire in 28mm and inflate to 70 psi www.excelsports.com/main.asp?page=8&des ... 1&minor=27.

The ride quality and rolling resistance will blow your mind and your 23mm will end up in the trash bag.

Should I go 25mm or 28mm? thank you for the help everyone

I assume that your frame can clear 28mm tires, since this is somehting you tried before. Again, don't just settle for any 28mm tires. There are quiete a few harsh, all season tires that ride like wood. Take my advise and order a pair of 28mm Panaracer Evo A. It's only $57/pair www.excelsports.com/main.asp?page=8&des ... 1&minor=27

[eforce123]

I am just after which tire set up is fastest. I don’t mind the ride even at 125psi. I don’t think it’s harsh but I am younger then some. Maybe it’s the years in the gym and I don’t feel the upper body drain like others do.

Again I just want to ride faster and if 25mm or 28mm help that then I’m down to try it. I do ride on normal roads which are not rough imo but definitely not smooth.

Definitely getting that tire brand mpulsiv

[AJS914]

Look at the article I linked to and pay attention to the break point for the different type of road surfaces. You want to achieve the lowest rolling resistance which will be around 90-100psi for most normal roads.

[eforce123]

Look at the article I linked to and pay attention to the break point for the different type of road surfaces. You want to achieve the lowest rolling resistance which will be around 90-100psi for most normal roads.

I re-read your link and have a better understanding of pressure and rolling resistance. I have tried 28mm on my Cannondale super six but I currently ride a super six hi mod. it's my believe they are the same frames minus a few grams in overall carbon make up. so it's going to be 25mm or 28mm to try.