Hi,

Some time ago I bought new frame and I am little confused. Internal width of rear dropouts is about 129,5 mm with quite thick layer of paint. Problem is that my rear hub was 131 mm wide. I decided to change hub spacer from 6 to 4mm and right now everything fits perfectly.

But question is different. Is it ok to spread dropouts a little to fit wheel? I want to change wheels and I am not sure if it will be ok if new wheels also will be a little wider than frame.

Of course frame is made of aluminium.

Yes.

"...But question is different. Is it ok to spread dropouts a little to fit wheel? ..."

What is the frame material?

The typical wheel spacing is about 130mm...

So, yes, spread that extra 0.5mm, and you'll be fine.

It is aluminium 6061-T6

Frame is 129,5 mm and wheel 131 mm, so difference is about 1,5 mm.

You said that you already fixed that wheelset. Did you check the dishing?

But, future wheelsets may even fit better.

Personally, I don't like to force fit stuff.

Dishing? I am not sure if I understand correctly, English is not my native language, sorry. Is it about rim in line with frame? If yes, I checked this. Rim is moved 2 mm to drive side. I will fix this after season, because I do not feel any issues, bike is going straight even with hands off handlebar.

"Personally, I don't like to force fit stuff."

Me too, that is the cause of my question After season I will sand paint from dropouts and check once again. I know that 1,5- 2 mm is not too much, and probably frame bends more during ride, but I like everything to fits perfectly.

Springing the drop outs 1 or 2mm to fit the wheel is nothing.
Just put the wheel in and forget about it. It isn't a problem.

Most likely they're both 130mm or within functional tolerance and your measurement is off.

Basically, put the wheel in the frame.

You cannot safely and permanently bend an aluminum frame,as you can with steel---and you shouldn't need to. Pop that sucker right in there.

As [MENTION=176970]seau grateau[/MENTION] noted both measurements are probably withing manufacturer spec and the wheel is a tiny bit tight but likely not off by 2 mm. Don't worry much.

I wouldn't bother with that. I'd just re-dish the wheel (i.e. make sure the rim is centered between the hub locknuts) to make it fit the way it is. If the wheel is only a couple millimeters off-center, it won't be a big job, and you won't be making any irreversible changes to the frame.

Thank you for help!

I hope next wheelset will fit better, if not, I will spread dropouts a little during wheel installation.