Towing car on a trailer

I agree with a 7,500 GVWR trailer as well. There are some really nice all aluminum ones on the market now, such as EZ Hauler and Mission trailers. Once you hit the 8k GVWR mark, some states kick it into a higher registration class, and it looks like NY charges by the 500 pounds for registration.

Electric brakes are fine for a car trailer. If they have the option, self-adjusting brakes are really nice, but also easy to add later. IMO aluminum wheels are a must, because they are less likely to seize in place if you drive on salted winter roads.

The other option I'd look at is tie-down locations. These are basically customer-spec'd, and some dealers do better jobs than others when they spec their in-stock trailers. Make sure there are enough tie-down for the style straps you want to use, and that you can reach them without crawling under the car. I really like 2-point wheel straps, because they still allow the suspension to work. Tying to the chassis can cause extra shock on the straps when the suspension compresses on bumps then rebounds. This shock can tear the hooks out of unibody cars. If you watch most flat-bed tow trucks these days, they've mostly switch to wheels straps for this reason unless they're hauling a pickup.

Lastly, make sure the trailer has the driver-side "escape door" option. Some brands even offer this door large enough to go all the way to the floor of the trailer, which will make it far safer for egress.

^ What he said.
7kgvw trailer will haul 3800lbs fine.
Electric brakes.

Generally car haulers your looking at come in 7000 gvwr with tandem 3500 lb axles with brakes.
The trailer may weigh 1700-1800 lbs plus the 3800 lb car = 5600 lbs so its well under the 7000 gvwr.

My 10000 gvwr car hauler has tandem 5200 lb axles/brakes but weighs 2520 lbs. Unless your hauling something that weighs in the 7500 lb range you may no need it. However 5200 lb axles times 2 = 10400 lbs of braking is a big deal.

Tires will be your biggest concern.
The 7k trailers usually come with 15" 5 or 6 lug wheel. If you go this way I would have the trailer mfg mount Providers.....Goodyear Endurance.....Carlisle HD ST in that order. They will cost you extra but a much better tire down the road.

The 10k trailer usually come with 16" 6 lug wheels. If you want the best tire for that size trailer pay extra and get the Bridgestone R-238 commercial grade all steel ply carcass tire. We run these 60k plus miles with no issues.
Or if you choose to stick with a ST tire use the same brands I mentioned above.
The trailer dealer will tell you their off brand maypop ST tire is good or better however having placed many trailers is service I and my drivers found out they weren't.

I see your sometimes from Texas. Tx abounds with these type trailer mfg and their dealers.