That depends on the year, model, and other factors. Check the label on the driver's door jamb for factory tire size.
205/65/16s on my grand caravan when i bought it
The 2010 Dodge Grand-Caravan's engine produces 205 ft-lbs. @ 4000 rpm.
The 2008 Dodge Grand-Caravan's engine produces 205 ft-lbs. @ 4000 rpm.
The 2009 Dodge Grand-Caravan's engine produces 205 ft-lbs. @ 4000 rpm.
Yes, if you can live with an inaccurate speedometer.
no
Something like 205 75 R15.
Yes, they can
Yes, you can
Yes you can use 205 60 r 16 tires in place of 205 50 r 16. They are only slightly higher.
NO, rim size is incorrect.
One can purchase 205 45 17 tires by going to a Firestone store. The Firestone company sells a number of tires for different automobiles, including 205 45 17 tires.