Planet X RT58 tyre widths?

bikeit65

I have the Planet X RT58 in carbon which has ultegra 6800 calipers, does anyone know could I move from 25mm to 28mm tyres without any issues?

d00d4h

Depends on the tyre. I have 25mm Pro 4 Endurance on mine, which size up to just under 28mm.

A 28mm tyre which sizes up to 28mm should fit, I would have thought.

arlowood

I had a Planet X Pro Carbon and was running Michelin Pro4 Endurance in 28mm on that frame. Admittedly the clearance at the rear brake bridge was pretty tight but as I did not ride in the wet or during the winter I was OK with that.

I think the RT58 is a similar frame tho don't quote me on that.

bikeit65

d00d4h said:

Depends on the tyre. I have 25mm Pro 4 Endurance on mine, which size up to just under 28mm.

A 28mm tyre which sizes up to 28mm should fit, I would have thought.

The tyres I'm thinking about getting are the Contintenial GP 5000

d00d4h

bikeit65 said:

d00d4h said:

Depends on the tyre. I have 25mm Pro 4 Endurance on mine, which size up to just under 28mm.

A 28mm tyre which sizes up to 28mm should fit, I would have thought.

The tyres I'm thinking about getting are the Contintenial GP 5000

I've no experience of them, but I think I remember hearing that they size up pretty accurately.

joe_totale-2

Often the issue isn't the brake calipers but actually around the seatstays and chainstays. Crack out the tape measure and measure how much space there is left with the 25mm tyres fitted.

bikeit65

Update guys, I finally got around to fitting the new tyres on the bike, the only adjustment needed was to adjust the brake calipers, thanks for your replies.