[cdmulders]

You might want to recheck the amount of 'poke' you have on your rear wheels. My math says that your proposed rear wheels are going to poke over 1.6" further outwards than your original rear wheels. Before you consider offset, the rear wheel will stick out 1" further than the old wheel since it is 2" wider. Then, you add the additional 16mm reduction in offset, which moves the wheels 16mm outwards (approx .63") , and you will find that the outside rim of the rear wheel will move over 1.6" outwards relative to your original rear wheel. Your front wheels move outwards just under 1".