I use Ride On sealant and my FOBO II's work just fine. That said, I wouldn't use either as a permanent repair. You don't mention what tire? A front is easy peasy. You also don't mention what type of tire? I'd have no concerns using a internal patch/plug on a car tire.
A proper plug &/or internal patch
should work fine on a proper car tire fitted to the rear, just so long as the puncture isn't a hole or tear in the sidewall or a puncture of any sort right on the joining strip between the edge of the tread & the sidewall! :shocked: Punctures &/or tears in those areas are
a whole lot more difficult to repair properly & safely than a simple hole punched thru the rubber (& not a steel belt! :sour: ) in the tread area! :lecturef_smilie: Besides, if you've got a puncture of
any sort in any tire (& not just a leaky valve or FOBO Sensor

) then you really should get
the inside of the tire inspected by someone who knows what they're doing in order to make sure it's safe to repair & to determine what
is the appropriate repair method before any '
permanent' repair is carried out! :thumbup:
However, a front tire (or a pair of front tires!

)
is a pretty easy replacement job, so unless you've just fitted a brand new set of very expensive tires, for the relatively small cost compared to the potential costs of a catastrophic failure in a steer tire at the worst possible time, it's a pretty cheap & easy fix to get a new set of fronts & give yourself the peace of mind in knowing they're most likely 'good tires' without any potential weaknesses caused by a damaged tread ply or torn thread/plies in the sidewalls, isn't it?!?

Even given the phenomenal capabilities of the Nanny to keep things under control in a wide range of circumstances, I'd much rather fork out for new front tires than risk pushing a potentially questionable steer tire beyond it's limits & finding out the hard way that I'd gone too far, then having to fork out for a new Spyder.... or make my family or anyone else's family fork out for funeral, wouldn't you?? :dontknow: