I LOVE shinin the tires, but the interior has to be dull. I hate having a glare on the windsheild when im driving into the sun. The sun is already in my face I dont need a glare on top of it! So I use Xzylon Mink Oil vinyl and leather conditioner. Stuff's not cheap either. But it makes leather seats feel like butter, and it's not greasy.
To clean it I usually use a very mild soap and water solution. Or a general purpose cleaner of some kind.
If I need to clean a tough stain I break out the Simple Green but NEVER use it on leather because it WILL fudge it up. Never use simple green on non-clearcoated/unpainted aluminum either.
I use Eagle One heavy duty degreaser under the hood. Stuff cuts grease like a hot knife through butter, and it'll cut your lungs too if you breathe the overspray. And it wont oxidize aluminum parts.
Tire shine, any kind will do, but none will shine like Meguiars NXT Insane shine!
Presta Fast Wax and Meguiars Gold Class are the best two waxes I've found yet. The Fast Wax can be applied in direct sunlight in the middle of the summer and will wipe off with no effort.