Flydyl
Hey folks, Canada's biggest gravel race is the Paris to Ancaster (P2A).  I'm posting to get folks' thoughts on tires for Sunday.  Whether you're riding or not here's the question:
  • The conditions should be quite muddy, due to a lot of rain this week.  There are long stretches on pavement and rail trail which will not be muddy.  
  • I'm trying to choose tires.  I am currently running Vittoria Terreno Mix tires, 700 x 40.  I'm tempted to switch to my 700 x 33 tires (WTB CrossWolf on front, Vittoria Cross XL on back).  
  • The 700 x 40 tires are pretty heavy for race day (500g each).  Not that I'm trying to win, but I'd like to get under 3 hrs for the 70km course.  
  • There's not much rough stuff (rocks, roots, etc.) on the course: it's fairly smooth, as a gravel race goes. 
  • I'm guessing that most of the competitive riders will choose a 700x30, but maybe they'll go up in size for these conditions? 
  • Would I choose the large volume tires to "float" a bit in the muddy sections?  Or should I opt for the lighter and faster tires to get a good time? 
Any opinions welcome!  Thanks, folks,
Flydyl [P2APressRelease2017-4-700x394]
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Bigugly
A little late to the game here..lol  I rode yesterday on 700x40's as it's all I have but if I was to do it again I would have rode something smaller. Small penalty to pay in mud for huge gains everywhere else, I'll go back with 33-35's. This was my first year, I was in wave three and finished in just over three hours.
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Flydyl
I swapped out the 700 x 40s for my smaller tires (700 x 32 on the front , 700 x 33 on the back).  I was worried the larger tires would really muck things up, b/c I don't have much clearance left with 40s on.  

Very happy I made the switch. I was fine in the mud and faster everywhere else.  The extra clearance helped purge the mud and the lighter tires were nice to roll with. 

Man--a lot of broken rear derailleurs!  
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Bigugly
I watched a guys rear derailleur snap off then swing into his wheel!! It was carnage in the last three to five km. I stopped twice to dig the mud out, likely wasted 10 minutes but may have been a savior for my derailleur. Next year I will be back but with different rubber next year. Still did ok rode the third wave and came in 488th.
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