If you're gonna stay at stock height put some 235 75R 15's on it. They're about 28.8 inches tall. To find the best look on your truck find some free worn out tires at a tire shop in different sizes and mount them on your rims. Put them on to see how they look. The front will be where you need to check clearances the most. Get a 215 75's and a 225 and a 235 to compare. It might cost 20 bucks but will save you money down the road by getting tires you like the look of and fit nicely.
