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The tires arrived today, and I am about to go have them installed. As promised, pics will soon follow.
 

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I had the 245/35ZR19 and 275/30ZR19 Continental ExtremeContact DWS tires mounted on the stock rims last night. Everything seems to fit perfectly with no rubbing. I did a little hard cornering...no rubbing. I drove both forward and backward with the wheels locked to either side...no rubbing. Last night is was about 30 degrees where I was. The DWSs have a ton more grip in the cold.

I took several pics at NTB (got them to mount and balance the tires for $25 each). Before anybody comments, just let me say...I know my car is filthy right now, and I am embarrassed to even post pics of it. As soon as it warms up, I will wash it and take better pictures. I just wanted to show everybody how well the 245s and 275s fit.
 

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I went with the Continentals, because they are generally rated as the top all around ultra high performance all season tire, along with the Michelins Pilot Sport A/S. They were MUCH cheaper than the Michelins though.
 

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Have the new tires changed the driving dynamics of the car it looks to me that the tires are a bit to wide for the rims ie is it more loose/tire flex on turn in's ? . Reason i ask is the 255's give the correct side wall stiffness based on wheel width, kindly advise
 

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Have the new tires changed the driving dynamics of the car it looks to me that the tires are a bit to wide for the rims ie is it more loose/tire flex on turn in's ? . Reason i ask is the 255's give the correct side wall stiffness based on wheel width, kindly advise
on the stock rims, 245/35/19 fronts and 275/30/19 rears fit and drive great. You might need to get an alignment (I did) after switching, but there are no problems with tire flex, turn in or anything of that nature. These sizes are the widest advisable tires you can put on the stock rims though.
 

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No, I didn't replace anything regarding the TPMS. I didn't think I would need to. Should I have?
 

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No, I didn't replace anything regarding the TPMS. I didn't think I would need to. Should I have?
No, a tire change doesn't affect the operation of the TPMS system, as long as the correct pressure is maintained.

Lou
 

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So, I guess this means you can use the same sensors. Why does the owner's manual recommend replacing them with the tires? And, did you have the dealer install your tires or you went to a tire shop? Just want to know what to do in the future...
 

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I purchased the tires online, and had NTB install them locally.
 

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An alignment isn't mandatory, but is always a good idea. I got an alignment at the Lexus dealership a week after I had the new tires mounted and balanced, because the car was floaty at 80+ mph. I don't know why, but the toe angles were off on both sides after the tire change, but the camber remained perfect.
 

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275/30/19 in the rear is the most aggressive we can do.
245/35/19 or 235/35/10 are the best for the front.


I'll be trying out the 235/35/19 and 275/30/19 on my car next week. I think going to Michelin PS2s.
I was speaking to someone at the Tire Rack the other day asking for his recommendation on the best front/back tire sizes on the stock rims as I wanted a bigger footprint. He recommended 245/40/19 on the front and 275/35/19 on the back. The Bridgestone REO50A Pole Positions come in that size and are XL as well. Overall diameter and Revs per Mile (Fronts and Rears) are virtually identical. Can anyone confirm that these will work with no issues? What are your thoughts for this combo?
 

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I think the stock tires are 26" diameter for the rears and 26.1" for the fronts. 245/35R19s are 25.9", which is very close to stock diameter. 245/40R19s are 26.7" which is definitely taller...I don't know if it would be enough to rub during full steering lock. 275/30R19s are 25.5", while 275/35R19s are 26.5". I imagine both would work fine, but I would think the shorter tires would work better overall. I know for a fact the shorter tires won't rub. Your car should be a tiny bit faster with the shorter tire as well.
 

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Hi,
I changed my tires last month. I have 285/30/19 rear and 245/35/19 in the front. I am using Yokohama Advan Sport tires. The handling of the car has changed and I am not happy about the cornering. It has suffered a lot. It could be that the treads are new so it is a little worst than usual, but I will not advise changing the stock configuration by much. It is raining here in the Bay Area, so the wheels are a little dirty, I will post the pictures next week. They definitely look cooler than stock and Yokos go as wide as allowed by the spec for a given tire size, so it fills the well very nicely. However there is a slight bulge on the outside since the rims are not wide enough to take a tire of that size. If you just want looks, you should go with tires this wide, and do me a favour buy mine for a discount. I will just not go this wide again. 265 may be in the rear at most.
Ash
 

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^^^^I running 285/30/19 and 245/35/19 rear to front, and my experience has been a 180 from you. I'm running the Continental Extreme DW. See my original post:

http://www.lexusfforum.com/forums/showthread.php?t=3159&highlight=continental

I changed last August, and have about 5K miles on them, everything's better than the stock Michelins. Cornering, traction, noise, ride - everything has improved. The rain performance is also much better than the Michelins. I was caught in a downpour a couple of months ago and the Continentals handled with aplomb. I luv 'em.
 
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