wheels/tyres for my trailer

[KinLoud]

My old beaten up farm trailer has perished tyresm - never goes on the road so will condier slightly dodgy solutions! LOL
At the moment it has 185/80/10 tyres on what appear to be mini rims (4x4inch = 4x101.6mmPCD)

rims look rusty so i need to plan for the event that theyre too rusty to be reused

Solution 1 - replace tyres and inner tubes
Solution 2 - replace tyres and wheels
Solution 3 - replace with 4x100 rims (will file out holes to suit hubs) - would need to be small diameter tyres to fit onto trailer

I want to keep costs low
Suggestions?
Thanks
Ken

[Bling]

Solution 1 - replace tyres and inner tubes

Gets my vote. Unless the rust has affected the strength of the wheels, i'd just do this as it's the easiest solution.

[thegreatestben]

My old man bought some rims with brand new snow tyres on them for like $35 on trademe. All good for a trailer. 4x100 is close enough for a farm.