NO, that is a very bad swap. The 235 tire will be 2.81" too tall. Your speedometer will show 54.6 at an actual 60 mph. A 215/75-16 is an excellent swap and a 225/70-16 is acceptable.
140-80-16
Front tire: 130/70-18Rear tire: 160/80-16
You can but it is not advisable. The 205/50-16 tire will be .80" (3.22%) smaller in overall diameter. This will cause the speedometer to read 62 mph at a true 60 mph. Your engine will also turn 28 more rpms per mile. Handling, braking, power, and fuel mileage will be adversely effected. If you wish to go to a 50 series tire then install 225/50-16. This size will work perfectly and there will be no changes in any aspects of your vehicle except a slightly less comfortable ride due to the lower sidewall.
195/75-13 would be the best replacement. 205/70-13 would be an acceptable replacement.
Of course you cab but the question is should you. If is never a good idea to go over 3% difference in the OEM size. This 205/70-15 is 3.07% (.80") larger in overall diameter. Your speedometer will read 62 mph at a true 69 mph. If you wish to go to a 70 series tire then a much better swap would be a 195/70-15 which is almost identical to your OEM tire.
A 235 / 85 / 16 tire is ( 31.7 inches in diameter and has a section width of 9.3 inches ) A 245 / 80 / 16 tire is ( 31.4 inches in diameter and has a section width of 9.6 inches ) So , they are pretty close in physical size , but I don't know about the weight carrying capacity ( the 245 tire , with the lower profile . is 3 /10 th of an inch smaller diameter and 3 /10 inch wider )
It is: 164
16% of 80= 16% * 80= 0.16 * 80= 12.8
the griffon is 205 ft with a 90 degree angle drop
75/80 = 15/16 75/80 = 15/16 75/80 = 15/16 75/80 = 15/16
GCF(80, 96, 80) = 16.