Here's a quick photo hack. I'd call it photoshopped but that would be giving me too much credit.
Should be relatively close, they looks smaller than my 18's and bigger than 15's while keeping the tire size relatively close-ish...
View attachment 1715018416
Don't listen to the "big wheel" haters. There's pretty much nothing for street tires in a 15" rim that isn't a hockey puck. Only options with decent compounds are drag radials or dedicated autoX tires and neither are going to work well about 9 months out of the year on the street in most places. BFG T/A's are good for making smoke, but that's about it because they've got no grip. A /6 auto car with a pegleg 2.76 can spin a set of BFG T/A's with a little motivation. Sure, it might
seem like you're going fast because you're always losing traction, but don't go head to head with someone that has real tires. In 1970, a '70 Hemi 'Cuda could put down a 0-60 of 5.8 seconds(motor trend, may 1970). Nowadays a bone stock 2015 V6 Mustang with factory tires can pull a 0-60 of 5.5 seconds (Car and Driver, August 2015). By modern performance standards these old muscle cars, in stock form, are pretty pathetic. And it starts at the tires.