I believe the phantoms are sl (standard load ) tires ?
You need a tire that can handle the weight of the van. The LT stands for Light Truck, vs. SL or P, which stands for Passenger vehicle. The LT tire would have a different construction, the cords are of a higher gauge and often there is an extra steel belt and additional ply in the LT tire compared to the standard load equivalent. LT tires are made to carry higher loads, but have a lower speed rating.
XL rated tires have the higher load rating similar to the LT tires, yet retain a higher speed rating, since they are passenger vehicle tires. Most LT tires have a Speed rating (R ) = 106 mph. I don't think you will be doing 100mph plus in your van. So yes you need LT tires. You don't want to over load your tires.
Arianrhod:2003 Chevy Astro
Black Magic: 1985 Dodge B-250
Serenity:1985 Chevy G-20
The Outcast:1983 Ford club wagon
Luna 1974 VW bay window transporter
Freedom:1990 Ford E-150(parts van)
Outcast Vanners van club
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