18’s with 265/65/18. Traction control engaging on highway corners.

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jlglr4

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I run 18” BFG’s with about 46/50 PSI, and I think you lose a little handling over stock, but no way would I say the car is wobbly. And I’ve never had the DSC light on dry pavement.

I noticed the OP’s comment about finally straightening out the issues with the LCA’s and alignment. How was the LCA/alignment problem finally addressed? Was the car aligned at a shop?

Looks like lower control arms were replaced twice (with the first new pair cracking at the welds?), ball joints were replaced, axle bearings replaced. Steering control seems to have been a problem before and after the new wheels/tires, but maybe this is a different problem?

A “wobbly” feeling sounds to me like remaining alignment problems, but could also be a lot of other things - maybe really bad tie bars, or maybe stabilizer bars/links if we’re talking more of a roll-type sensation. Ball joints, but sounds like those were replaced as well.

But if, indeed, you had new LCA’s on that car that cracked in a short period of time (which is what looks like happened from your last post), that seems to indicate something is putting some really out-of-wack pressure on your steering system. It could have been a faulty new LCA, but with the steering issue that seems to be persisting, makes you want to rethink that problem.

As for the traction control system engaging, my understanding is that its not just traction control but stability control more generally. I believe the system senses roll and under/oversteer, which kind of fits with the steering problems you were describing in the prior posts - loose steering that wants to turn hard into a corner.

If the car hasn’t been aligned at an alignment shop (specialist shop), that’s what I’d do first. If they can’t get it aligned, or if it won’t keep an alignment, it should start pointing you towards places to look.

It’s an interesting problem - keep us updated as to what you find.
 

navigare

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I do concur that your pressures seem high. I have the exact same tyres and have covered 30,000 km on them on various surfaces, from highways to heavy offroading, with the car fully loaded and weighing some 3.5 t. Never had any problems but my pressures were 40-44.
 

Jimmy Brooks

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I would say that as long as all of your fronts tires psi is 40 or above and your rears are 42 or above, you won’t be having any traction control interference unless it’s necessary. I just keep mine now at 42 in the front and 46 because I prefer a more firm ride without compromising actual traction. Off road I’ll air my tires down to 32 in front and 36 at rear.
 

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