Studs on these types of hubs screw in from the front and are not pressed in from the rear like most non-wheel bolt hubs. Normally I'd say that running a tap through the hole would repair the threads and make it better, but it's hard to see how much damage there is and how many threads are still viable to hold a load.
The engineering rule of thumb for thread engagement (at a minimum): thread engagement in a steel member should be equal to or greater than one full diameter of the bolt and be of comparable strength (i.e. if the screw is ¼” diameter, the thread engagement needs to be a minimum of ¼”). When designing bolted joints, when possible, I typically spec engagement depth to be 1.5 times the bolt diameter. With a wheel hub you are limited by the thickness of the hub which is only 0.50” at the threaded portion on the Lotus, the wheel bolt/stud is 0.4375” which leaves you painfully little room for thread damage.
Repairing the threads with an insert like a Heli-coil is an option, I would only consider this if you replaced the wheel bolts with studs, but I'd still be a little hesitant due to the thickness of the hub; a Heli-coil needs one full diameter of engagement but since it is bigger in diameter you would need a thicker hub to attain that.
If it were mine, I’d replace the hub and purchase a quality set of wheel studs and nuts.
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