I know that it seems compelling that with less weight the bike would be unbalanced to one side, but that's not the way it works. Had you every checked to see if the bike pulled before you replaced the battery? Did you do any other maintenance at the same time as the battery change?
There are a number of FJR owners that have Shorai batteries and their bikes do not pull to one side as a result. Put a brick in your right side saddle bag to make up for the lighter battery and go for a ride. Did the bike stop pulling to one side on the same road in the same place? Something else is causing the pulling, it might be still be a road crown issue, or it could be tires or forks.
Thanks for the clarification.
I never had tested before!
Hands off the handlebar and the bike should not lean to the right or to the left; with the OEM battery or lithium battery, should just go straight.
If not going straight. Something in the suspension or tires can cause the bike to lean. OK!
I put the old OEM battery back in place and tested on the same road and others, the lean effect was
perceptible but less pronounced.
When I changed to lithium battery did not do any more maintenance.
The last maintenance was performed at 6900Km ago; the suspension was checked and changed to Ohlin’s oil, new set of tires: Pirelli & Angel GT GT "A" to the rear wheel.
Obs:
The tires usually last 10 to 11.000km, the rear tire usually spend up faster, but this tire model I think the front has more wear at the moment
Already re-checked, and the setting of the suspension are on both fork legs standard 12 clicks hard to soft (rebound & Compression) and the spring preload standard 4 lines.
Tomorrow is going for the workshop.