Brother Check this Chart, You can Only move to 2.75" to 3.0" with the Pridor Standard RIM Size, And 90/90 Tyre is more Wider then 3.0 so How it posible to Fit this in 1.6" RIM size, Dafinatly it suffer in some way, I ask this Question from Snr member They Refused for 90/90 Even Ravi Paiggio is unable to handle this tyre size smartly.
I also check market review and 2 persons which are not using stock tyre, they said 3.0 is best but above 3.0 is not recomended, because bike economy distrube and load on Engine,
Keep in mind it 97cc Engine, it the Body weight is equal to CG-125,
70cc engine bearing 80 KG body
97cc engine bearing 98 KG's body
In my view Pridor is best for single ride, i done many trip alone (80 KG), and a Pillion ride with 50 KG weight with stock type. Its working fine and never let me down