Continental Gran Prix 4-Seasons in 28mm

[James Bondra]

Do any of you ride this tire? My questions are the following.

How does it ride in terms of quality, durability and rolling resistance? About how many km/miles have you gotten out of a set?

Is is true to size or smaller than stated?

Thanks for any and all responses.

James Bondra
Business, Economics and Sport Management & Media Librarian
Ithaca College
Ithaca, NY  14850
607-274-1962 (w)
607-220-4382 (cell)

[Dave Sweeney]

James-

I use the 4 Seasons in 28 mm & have been extremely happy with them.  Only 1 flat in 4500 miles.   My first set ran about 3000 miles.  I opted to be proactive & replace them.

IMO, the 28's run small, particularly in width.

They offer a wonderful ride quality & confidence in handling.

Dave Sweeney

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[littlecirclesvt.com :: mike beganyi]

Love me. Hard to wear out. Still have a new set hanging in the garage. I think I've gotten an average of 3k on the rears.

Have only flatted on them once on the road in 5 years.

They run more like a 26 on a Mavic Open Pro.

Smaller than a pasela 28.

[russell...@yahoo.com]

The Continental Grand Prix 4 Season in 700x28 is only 26mm wide at its widest.  Its a narrow tire.  I use the tires.  Had a few flats, so they are not impervious.  Not sure how long they last.  Been going awhile and are still going.

[Thomas Durkin]

I ride this tire on a commuter bike on smooth roads. It runs harsh on chip seal and pot holes. Durability and toughness are ok.

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Tom Durkin

[NormC]

I find them very durable. Can't remember the last flat I had with them. Good compromise between the roughness of a tough tire and the smoothness of more delicate tires, in my opinion.

My calipers say that the 28s are actually 26.5mm and the 25s are actually 24mm.

[Chris Heg]

I like them. Good flat resistance, pretty good ride quality. Not hard
to mount. I get 3000-5000 miles out of a set.

[Rando Richard]

After doing a quick search I discovered this old thread.

I wonder how the 28mm 4-Season compares to the 4000 S's. I have been using the 25mm 4000 S II for some time, but I just switched to 28s. The 4-Season model has better puncture protection. Like everyone, reducing flats is a never-ending quest (no desire to go tubeless yet...I have too many bikes and wheelsets to maintain!). According to this site, the 4-Season 25s have higher rolling resistance compared to the 4000 S, but I wonder if in a 28mm size that the rolling resistance might be more similar.

Thoughts or experience?

Rando Richard

Living in the Mountains of Central Utah

Blog

[Devin]

My 2 cents worth.

I am not a weight conscious person, as you cannot make an eagle out of a turkey, but I run 32s with a kevlar bead and thorn proof tubes. Since doing this, I am pretty much flat free.

-Devin

Longmont, CO

-Devin Quince

League Cycling Instructor

“We found that if you make more road space, you get more cars. If you make more bike lanes, you get more bikes. If you make more space for people, you get more people and of course then you get public life.”

“A person on a $30 bike is just as important as a person in a $30,000 car.” Enrique Penalosa

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[Richard Stum | eoGEAR]

32mm 4-Season or some other tire?

[Devin]

It depends on cost for me, so the brand tends to change. I used to run Rando's, but the last 3 sets have had such tight beads, I could not get them on without pinch my tube even with soap.

-Devin Quince

League Cycling Instructor

“We found that if you make more road space, you get more cars. If you make more bike lanes, you get more bikes. If you make more space for people, you get more people and of course then you get public life.”

“A person on a $30 bike is just as important as a person in a $30,000 car.” Enrique Penalosa

[Scott]

There are 32mm 4seasons available...I ordered a few from the UK for ~$40/tire...I saw them at LBS for $75+tax yesterday....Scott

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[Jon Lumpkin]

So I've used 4000s (23, 25, 28), 4 Season (23, 25, 28), and Vittoria Pave (27) and found all to be very good tires. The 4000s do seem to roll with slightly less effort (online tests and repeated loops). 4000s and 4 season have a similar road feel, Paves are a bit more cushy. 4 seasons and Paves are billed with better traction in the wet due to the rubber compound. I probably have the most flats on the Four Seasons but those were almost all when I was running 23mm ones in Austin, TX with lots of road debris. Since moving to NC I have had only one or two road flats a year and all of these seem durable enough. I think the big improvement of puncture resistance on the 4 seasons and Paves are the reinforced sidewalls which is key on gravel and other sharp surfaces, for tread punctures I think they're about even.

Critical measurements, all taken on an 18c (internal width) rim at riding pressure of 80-100 psi.

4 season 23mm (from 2012 and well worn) - 26.6

4 season 25mm (from 2016, nearly new) - 27

4 season 28mm (from 2014, ~1000 miles) - 27.8

4000s II 23mm - 25.2

4000s II 25mm - 27.4

4000s II 28mm - 31.7

Vittoria Pave 27mm - 27.4

So, I didn't find much size difference between any of the 4 seasons but the 28mm 4 seasons are considerably smaller than a 28mm 4000s II (my road race bike will fit the former but no chance on the latter).

FWIW I've settled on 25mm 4000s II with latex tubes as my preferred long distance riding choice. They're the largest that will fit my frame (CAAD10), roll well with minimal effort, and seem resistant enough to flats. I like the others for winter and mixed surface rides.

[Richard Stum | eoGEAR]

Thanks for the info Jon. Interesting that the 28mm 4-Season is a smaller tire than the 4000S. Last summer I had more than my shares of flats with the 4000S's, so I picked up a 28mm Schwalbe One HS462A to try out. It is intended as a tire for use with tubes (the HS462 is tubeless designed). Highly rated and even more expensive than the 4000S.

I have done some DIY treatments to my drop-outs and forks to allow my "old school" carbon fiber frame to accommodate fatter tires. Hopefully I'll have a blog post on it soon (otherwise, email me off list).

Cheers,

RR

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[Jon Lumpkin]

That's been my experience. But admittedly my 28mm 4-season tires (3x) are all from 2014 and the 4000s II 28mm are from 2016. It is possible that Continental revised the molds since then as the 4-seasons were undersized.

Interesting on your DIY treatments. I think those are a non-starter for me as my issue is tire height at the fork crown and brake bridge. A true 28mm will just fit but one that blows up to 30 or 31 won't even turn in the frame. But it's a road racing/criterium frame so that is to be expected.

[Richard Stum | eoGEAR]

I just added a blog post about my DYI shim to my road bike to obtain more tire clearance. 

Cheers,
Richard Stum

Living in the Mountains of Central Utah

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