be aware -
32mm GK SS can measure less than 32mm - so they could be smaller than your current 32mm GP5K
(my 32mm GK SS measured approx 31mm installed)
35mm GK SS can measure more than 35mm - my 35mm GK SS measured approx 37mm installed
On the same rims or on different rims? Remember that interior rim width can change the effective tire width.