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There are two different topics when it comes to running 37s rubbing the fender and rubbing the firewall... new fiberglass will eliminate rubbing on the fender but it does nothing to help rubbing on the firewall during compression.
If you are wanting more capability off road you need to increase the distance between firewall and tire. This is done through mid perch, different springs, wheel offset, caster... You can run 37s on stock fenders with very minimal trimming depending on wheel offset if you do the above.
I can promise you it will be less work to trim stock fenders than installing new ones. No glass is going to be a perfect direct bolt on. Advanced fiberglass(not sure about the others) do not drill any of the mount holes. You do it all. Then also the body work and pint that goes after.
my opinion if your not pushing the wheel out via longer suspension, whee offset or spacer, then the +2 fenders can look odd as they stick out too far.
Long story short you can run 37s with very little mods. It’s not hard it’s been done a ton. Good offset, slight trimming and go to mid perch. Done
Stock fenders = stock offsetI am on mid perch currently. What offset is needed for all stock with minimal trimming?
Will the 2.5 Fiberwerx get you there alone on the Gen 1?
Looking for more after taking it hard off-road for the first time. What’s the best way to get more without spending 30k right away?
Looking to make this a Mid/Long travel project long term but looking for a little more for the next adventure.
Thanks
My combo is Fiberwerx + Fox 3.0 + flattened pinch weld + 0 offset wheels + 37 Baja Boss tires. No rubbing. Not sure if that helps, but its some info for you.