ABS acting up

So I have a Strada with ABS and have the 18” and 21” terra wheels set that I just put on.. so was test riding and the abs lights wants to stay on. Sometimes it will flash and go off, but then a little bit down the road it will come on. Does the bigger wheels mess with the computer? I’ve literally only gone about 5 miles of testing so far. Also, when the abs is on, it’s super sensitive on the front.

You need to disable ABS at start. The 19 to 21 and 17 to 18 change mess up the parameters. The bike will think that the back tire is constantly going faster than the front, so every time you break ABS is triggered.

Gotcha, so no abs with this set of wheels on?

I'd check the air gap between the sensor and toner wheel on both wheels. I think it's should be between .004 - .040 inches. I'm running 17's on my Strada and the Abs works fine.

Yeas they were working fine with the stock 17-18” set up but now I have the 18-21” set up.

the different wheels sizes from the stock setup screw up the ABS computer. I think others have used custom made ABS rings to make it work. Search function in this forum and the advrider thread should give you some ideas https://advrider.com/index.php?threads/husky-tr650-new-owners-stupid-questions-thread.850525/

Thank! Do you think running the wheels with abs off will do any lasting effects?

i'm far from an expert on ABS bikes but since it came with the switch from the factory i'd assume it's ok to ride it switched off.

Not really

After changing the tires on my Strada, ABS became unstable going on and off erratically. Thought it was because a decompensation on the ABS pump happened when the wheels were taken off, but later I noticed that the tone wheel on the rear was bended a little bit, just enough to mess up the sensor. It seems that the mechanic bended it when he was struggling to place the tire on the rim, so he bended the tone wheel back to its original position with a screwdriver and ABS issues disappeared.
So in conclusion, I´m sharing this experience hoping it can be usefull.
Cheers!

Glad you got it handled! Mine just happens to be the different sized wheels... so no abs until summer!

When I got my current Strada it had a spoked 21" front and a 18" rear. The wheels were built with bmw hubs and abs rings. My abs worked just fine. Since then I've swapped to an oem Strada 19" front and a Honda 17" rear that I mounted the stock bmw abs ring to. Again, no problems at all with the abs. As Mysery1 said, the spacing between the abs ring and the sensor that reads it is important. I think the manual says .1-1mm. I bent one while putting on the front wheel, straightened it, and it worked fine.