I've seen them at Coker but they are super expensive! I think that 4 tires will be more than the $500 you're paying for the 230. But they look cool.

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1970 280SE Coupe W111
Chassis Number: 111 024 12
Engine Number: 130 980 12
Exterior Color: 180 - Silver Grey Metallic
Interior Color: 243 - Leather Light Red
Transmission # 004470