Cut tomatoes in half or quarters
Thinly slice green parts of green onion
Dice green pepper

Trim excess silk/husk from the top of each ear of corn
put corn on grill over medium high heat
turn every 5 minutes, about 15-20 minutes total
remove husk and silk and place directly on grill if you want some char (not necessary)

once corn has cooled, cut corn from cob

in a large bowl mix together olive oil, red wine vinegar, lime juice and salt
add corn, tomatoes, green onion, green pepper, and cilantro
stir to combine
garnish with cilantro and lime wedge