Hello,
I have a 07 Wrangler X and I dont know what gear ratios it has.
I am planning on buying new tires soon and I am leaning on either 275/75r16 or 285/7516 th stock ties are p225/75r16.
Would I need to regear if I put bigger tires on?

 

Probably not. The 275/75r16 is only about a 32. I'd say you'll notice a difference but 1 you can probably live w/

 

x2 especially if you have a stick. I would get the speedo recalibrated though.

 

Not knowing your stock gears is a tough one. If you have 3.21s, then it will flat out SUCK with larger tires.

 

This is all dependant on your expectations....if you figure your lacking power now, than YES you will lack even MORE get up and go by increasing your tire size and will most certainly want to regear right away
...but if your happy with your performance now, and your a manual with 3.21's then you WILL notice a decline in power but it IS more than manageable. I've been running this way for months and yes I do notice a lack of get up and go, but it's not the end of the world for me, works just fine for me for now...however I certainly DO plan on regearing in the future....comes down to your expectations

 

Is an automatic by the way sorry