I replace front and rear tires. On the front tire, I hadto center the wheel with new spacers and believe it's on straight. Took it for a test ride; let go of handlebars and the bike pulls to the right. I adjusted the right side of rear tire further towards front, and this lessened the pulling to the right of the bike. Bike kept straight longer.

Question: Is the rear wheel allignmentwhat causes the bike to pull to one side or the other?

If so, I will continue to adjust until best performance. If the front wheel could also be an issue, I would have to relook at it also.

Thanks.
dave

Yes the rear wheel alignment can case the bike to trail off center.
My not to scientific way of lining the rear wheel is having the bike on a lift and sight down the chain from the rear of the bike, paying close attention to the chain and sprocket alignment.
Also use the adjuster bolts as another guide keeping them even.
The Metzler tires I run are directional so have to make sure they are on the correct direction.

Rodney,

Thanks. I was lazy and should have double check the sprocket and chain allignment. I thought because I didn't touch the last allignment that the new tire on would have no issues. Maybe my old tire had so much wear on it that I never bothered to test while riding. I'm doing it now because I want the new tire to have even wear and for the bike toride straight. So, I will put her back up on the lift and check.

I've read not so nice things about the Metzler 880 Marathons since they are now made in Brazil, but have not had negative effects yet.Anyway, more miles and I will have a better assessment. I'm running Avon Roadrunner 21" up front. I like the current set upa lot. But time will tell.

Changing the the rear tire adjustment will affect the tracking. It can also be compensating for another problem.Were your front wheel bearings in good condition when you changed the tire? Why did you have to change your front wheel spacers?

Should have ask before?
what size tires front and rear?
what model bike?
is the front end extended?
any frame work done?

Let me try to reply:

Arby,
1) I just repacked the bearing and bearing race also looked good.
2) I swaped out new front end and wheel, that's why I had to get new spacers.

Rodney,
1) 21 front-Avon, 16 rear-metzlers
2) 67 Shovel chopper
3) yes, 4 over stock FXSTC (31.25" stock), so mine was ~35.25"
4)yes, downtubes streched...don't know how much

I think I've straightened it out. I used the string method, wrapping it around back tire and running string parrallel to bike to the front. Centered the wheel, then adjusted the back wheel accordingly. Seemed to have fixed it.

Thanks for the input. I just swapped out the front end and already forget specs. I bought TC lowers, order tube assembly and put an evo 21 FXSTC wheel on it. Save a couple of $$, but probably getting the whole front end would have save time. Cetering the wheel was another fun ordeal. Anyway, it's just money and time. I have more of one than the other.

dave