215/70R15 might be better, or consider moving to 16 inch wheels and tires. You could pull a set from a 01-07 model van and be all set. I like these myself:
Those vans used 215/65R16 tires. 27 inch diameter compared to 27.1 inch on your 205/75R15's. Not bad at all, should fit fine.
You can also just use the 16 inch steel wheels and grab a set of hubcaps. Your hubcaps won't fit the 16 inch wheels. If you have alloy wheels you could sell them after you get the 16s. Ride quality won't suffer much if at all from the wheel size change, just make sure you pick a strong tire to go on. I'll heartily recommend you ignore any S or T speed rated tire. Get an H rated tire, doesn't have to be a performance tire, touring and grand touring tires are in H and even V speed ratings and they're great. Yokohama Avid Ascent is the one with the highest UTQG trweadwear number in that size (and is only a $94 tire on TireRack). The Yokohama Avid EnVigor, Kumho KH18, andKumho Solus KL21 are right behind that.
Another thing, newer 01-07 base and SE model vans used 215/70R15 tires which are basically the same as 205/75R15. Shouldn't rub.