10 11 speed chainrings

[Thomson]

hi I have a Full 10 speed tiagra 4700 groupset with fsa crankset. On my. Bike 50/34. I bought a 52/36 10 speed tiagra crankset for more top end. Waiting to go on My Question is I have a 39 tooth 11 speed 105 innerRing also. Would that be compatible with the 10 speed tiagra 52 tooth? I like a big inner ring. Or will I have to get a 10 speed 38 tooth innerRing? Or keep with a 36? Any body mixed these before? I couldn’t get a 10 speed 53-39 and didn’t want to upgrade my whole groupset just to go 11 speed.
Cheers

 

[King Boonen]

As long as it’s the same BCD, yes you can run an 11 speed ring on your 10 speed crank set up. You can run a full 11 speed crank set up when the rest of the drivechain is 10 speed, it’s what I currently have on my road bike.

 

[DaneilWatt_204]

On campag 11sp rings are 0.4mm closer together because of the narrower chain that's used. But internal width of 10 & 11spd chains is identical so you'll not "strain" you 11sp chain in any way - BUT if you have a full 11sp setup then the mechs will be narrower that 10sp ones, so you'll probably get more chain rub using a 10sp chain.