@hassan4u
Suzuki Sprinter is the Successor of Suzuki SD 110 Which was equiped wid rear tyre 2.75-18 but in Sprinter they install 2.50-18 to reduce the cost, Increase fuel efeciency, & eliminate the complaint of hitting rear fender to rear tyre but too some extant they compromise on road grip. Even then the road grip is much better as compred to other counterpart.
BTW other thing which can cause the wheel skid can be the worn tyre & the most important can be the alignment of rear wheel & swingarm so get it check from mechanic if the wheel & swing arm are properly aligned & tyre condition is also good then it shudnt be happen & the last option which can satisfy u too some extant is the replacemant of tyre to 2.75-18