Any idea what kind of tomato this is and what's wrong with it?

Apparently it's caused by a lack of water during its principal growing period. Water often and deeply.

I'm not sure of the variety, but the top picture looks like early blight or possibly weather checking. You might want to go to this site to check your tomatoes' symptoms against the chart: http://vegetablemdonline.ppath.cornell.edu/DiagnosticKeys/TomFrt/TomFrtKey.html

As for the split skin, tomatoes split when they get excessive water, especially if it comes after a dry spell. If heavy rain is coming and your tomatoes are almost ripe, pick them before the storm hits.

Here's an article that should help you figure it out.

http://www.gardeners.com/how-to/blossom-end-rot/5354.html

Good luck!

The split is what Alyssa says, from too much water after inconsistent watering, or not watering frequently enough and getting a heavy down pour or long soaker rain. If you keep the soil moist, especially when the tomatoes are ripening they won't split when it rains a lot. Some kind of mulch helping to retain moisture will help also. I have been lucky this year and only have had two tomatoes split so far and they were cherry tomatoes.

The first on has blossom end rot caused by a calcium deficiency.The second https://www.thespruce.com/why-do-tomatoes-split-2540002

Thanks so much. It seems that growing tomatoes would be so simple but every year I have tried I don't get a good yield. I finally realized that the orange tomato was not going to turn red and tried it. It was delicious! I appreciate all the help ladies!!

There are orange, yellow and even purple tomatoes now. They are all really good and they tend to be sweeter. I grow them all.

Hello Pam, Your tomato plants are not getting enough water. I water my garden almost every morning for about 15 minutes. I use a soaker hose (which is really a hose with a bunch of pin head holes running down its length). But, here's the trick, I never let the water get bigger than 6 or 8 inches. It's called deep-root watering. My garden is thriving. I hope this helps you. Good luck.

It's called just as you see it. Ugly tomato. Good Luck!

tomatoes need a lot of water and spray them after the rain with dishwashing soap and water.... one kilo water and 1 tablespoon soap

It's an heirloom tomato and the bottoms always look like that. The top is from too much water to fast.

It looks like a lemon boy heirloom tomato. I have 2 of the plants and one has been producing orange looking tomatoes instead of yellow.