I was running 35s on 4 banger and 4.56 gears with no problems- yeah not exactly zippy but it would do 65 (70 on a good day with a tail wind). I am now running 34x10.5 but don't really drive it on the street any more so can't tell you if they do better with the skinnier smaller tires...
1994 Jeep YJ : 3.75" of lift, 4.56 gears, 8.8 w/ lsd, 34X10.5 TSLS and some other stuff. 4 Angry Squirrels and proud!
1981 (with some 80 and 84 parts thrown in) CJ7 under restoration. SBC 350, 2.5" lift, half hard top and lots of fun!