Driving characteristics of truck changed

Concern: I've noticed trucks leans a bit when doing turns on ramps on freeways, not noticeable on streets. Noticed after new tires/rims. Checked the torque on rear sway which are still good. No tire vibrations at any speed (up to 85mph).

Could it be just bigger tires affecting it? First time truck owner and driving with bigger tires so I don't know what to expect.

Background: stock suspension, trd rear sway 10k miles ago, recently 2 weeks ago installed new rims/tires 18x9 +25mm on 275/70/18 ridge grappler.

 

I'll throw my $.02 in. You are not much bigger than a stock size so I would not expect that to be your issue. I would guess that you came from a road-focused stock tire and put on a more all-terrain/off-road tire. The difference is that in a road tire you will have a stiffer sidewall that will behave better in cornering while an off-road tire will have a softer sidewall to help absorb all the little bumps and rocks off the road and it will feel a little sloppier in cornering maneuvers. You can compensate by upping your tire pressure to make the tire much stiffer but you will lose ride quality in all other situations. It sounds normal in my opinion but everything depends on what you are feeling as the driver and how big the difference is hard to tell for anybody that hasn't experienced it as you have.

 

Bigger tires add more weight, so yes there is more for the suspension/steering, etc. to control. You added probably 10lbs each tire moving from stock to 275/70, stockers are like 45lbs, light 275/70s are about 55lbs, your RGs may be even heavier. There may also be added weight from the rims vs stock. So you will notice that weight in many ways, steering, MPG, acceleration, etc.

How many miles on your truck? And with a limited, guessing you have the factory black shocks? Those are marginal at best on a stock tire truck, so are working hard to try and control the added weight of the new shoes. If you are in the 50k mile range on the shocks, the factory shocks have likely lost some of their vigor even before the bigger tires.

I don't think what you are experiencing is unusual. The truck will behave and drive differently with larger more aggressive tires.

 

Thanks for the inputs, have about 17k miles on the truck. I guess my next mod are new shocks .

At first with rear sway and stock tires the cornering felt good, now with new tires its a bit sloppy.

 

I get it. I have 46k miles, the TRD OR package shocks and noticed a difference as well. Shocks are working harder. One thing you can play with is air pressure, even a couple lbs of adjustment makes a noticeable difference.

I generally run between 35lbs and 40lbs on my 275/70-18s. The lower end gives a good pavement ride, softer, but also softer feel in cornering. Higher pressure will firm up handling but rides harder too...and I use higher pressure when towing.