Here are links to the Kumho 857 specs and the Goodyear marathons specs, so you can see what I was trying to explain in the above post about the difference in sizing between the Euro-sized and the ST metric sized tires.
A Euro sized 205R14 C is taller than even a ST 215/75R14 metric sized tire.
RADIAL 857 - Kumho Tire USA, Inc.
I don't know how much clearance you have for taller tires. If going the Euro-sized route, you may possibly want to go to a 195R14 C tire to keep things closer to the 205/75R14 height, if that's what you have currently.
Looking at the specs a Euro 205 carries 2271 lbs while the Euro 195 carries 2094 lbs.
Either one of these is better than a GY ST 205/75R14 at 1760 lbs or the GY ST 215/75R14 at 1870 lbs.
Hopefully, I'm not boring you to death.......and you can make an informed decision that works best for your situation.