Actual wheel image pixel dimensions for Robospin?

[tonberryhunter]

I'm having a terrible time trying to figure out the exact pixel dimensions my wheel images have to be.  If its off Attractmode does some awkward stretching.  It drives me crazy that many people dont seem to care about images being stretched more in one dimension than another but as a graphic designer it hurts my head. 

Thanks

[tonberryhunter]

Just downloaded the wheel.png image from inside the Robospin layout folder and the dimensions are 300px wide by 100px tall.  Im gonna run a test to see if that prevents any weird stretching.  Its my understanding that some of these themes have been designed with a 4:3 screen in mind.  My time with Hyperspin has taught me there is a general divide in the artwork community about what aspect ratio one should use. 

[tonberryhunter]

So the size they want to be on a 1080p display is 537 x 181.  Seems like a pretty arbitrary dimension.