Isn't that more an issue with alignment, or IS going out of alignment? The same thing you're describing also happens with Bridgestone (I think that's posted somewhere on this thread), I THINK sometimes even worse than Michelin, and especially if the car needs an alignment. Just wondering what is your dealer's reasoning for narrowing this down to a problem more specifically associated with Michelin on IS than other tire brands?

 

Hi, I might be moving to Tampa but this also applies to TX. Do you know, or aware of, tire brands/models that have longer tread life than others in blazing hot sunny roads?

 

Based on how slowly my BFGs are wearing, after my alignment with some slight toe-in, I'd say the issue can be mitigated by alignment. However, due to the relative softness of the lower-control-arm bushing, it will always be a risk with this car.

 

So I recently installed some spacers on my IS and while I did that I checked the wear on my Michelin Pilot Sport A/S 3+'s on the inner portions of the tire while they were off the car, it seems the RCF/GSF LCA bushings are actually mitigating the inner wear for me. I don't drive like an old grandpa either, but I would say I'm about 60% conservative/moderate driving and 40% spirited driving. I also do drive 70% on the highway so idk if that is helping, but with the OEM bridgestones I definitely had a bit of inner tire wear since I didn't have the stiffer bushings.

 

I think most of what you're saying about tire wear & tear agrees with my posts on the matter.

Did you install spacers &/or bushings yourself or get a mechanic/dealer to do it?

 

I’ve done all my mods myself.

 

I think the source of the problem is the soft bushing Lexus uses that cause excessive dynamic toe changes. I've read here that custom alignment can mitigate the issue, but you will be going out of factory spec. Some people just replace the bushing itself with aftermarket ones.

I do annual alignment at the dealer(did one right after getting new tires) so my problem is definitely not the alignment. Dealer said it's because michelin tire compound is softer but I dono how true that is.

 

You can always do custom alignment and stay within spec. For example if I add toe-in of 0.05 deg it's not going to be out of spec, but it's enough to make a difference.

 

Not to sound rude or anything, but yes it’s pretty much been confirmed for a while that it’s the soft bushings they use. One member has had luck with a little bit of additional toe in which is mitigating the issue for him, but most people on the forums including me have installed the stiffer bushings. The tire compound doesn’t have anything to do with the inner tire wear except for the softer tires will wear the inside faster but a softer tire will wear out faster than a harder one in general not just the inside for cars that don’t have the inner tire wear issue.

 

Hi. Has anyone used a Michelin pilot sport 4s on stock rims?

I want to maintain the stock stretched set up of the stock Bridgestone er33. Front has 225/40/18 and rear has 255/35/18. I also like the big rim protector of the stock.

Saw the specs of ps4s 225/40/18 and it has a narrower width spec by .4””.

By any chance has anyone used the michelin ps4s on stock rims? Do you have pictures with specs? Thanks in advance cheers!

 

Hi, I have OEM Bridgestone tires on the rear, and per this thread Michelin PS A/S 3+ on the front, and both state around Maximum 40 PSI. Recommended IS350 FSport cold PSI is 36 (per door labels), but after driving in Florida, PSI sometimes reaches 45+ > is this pretty bad for tires - could they overheat, blow out, or something? THANKS!!

 

Tire Rack says max pressure is 50 PSI.
https://m.tirerack.com/tires/Spec.js...34YR8PSAS3PLXL

You should be fine. Though, I don't think I've ever seen my tires go up to 45. Maybe 41 on a longer drive on a hot day.​​​​​​

 

You can always lower the tire pressure as well. If you're never too far away from an air source to re-inflate your tires, I would set the cold psi to 34 and see if it makes a difference to you.

 

Is there a NEW VERSION of Michelin Pilot Sport 4S? Seems to be very highly rated.

 

I'd be surprised if so. The 4S is a pretty recent tire.