3is OEM tires replacement
Driver School Candidate
Joined: Apr 2014
Posts: 14
Likes: 0
From: AR
going with a 235 up front will change the rolling diameter also introducing negative rake. In other words, your front bumper is now going to sit up 1/4" higher than it used to while the rear bumper will remain in the same place. This is not a desirable trait.
If you want to reduce understeer a suggestion would be to find a rim that accepts a 255/35/18 in the front.
Mike
If you want to reduce understeer a suggestion would be to find a rim that accepts a 255/35/18 in the front.
Mike
Pit Crew
Joined: Nov 2012
Posts: 230
Likes: 6
From: FL
The difference in diameter is not 4mm. It is 8mm.
This will lift the front end of the car by 4mm. This will introduce negative rake and it will change the vehicles aerodynamics from factory spec. This isnt a huge difference but it's not something I would think of doing to help improve any performance aspect of the car at all.
Mike
Advanced
Joined: Jun 2013
Posts: 527
Likes: 15
From: Singapore
These are the front tires we are talking about so there will not be any speedometer change.
The difference in diameter is not 4mm. It is 8mm.
This will lift the front end of the car by 4mm. This will introduce negative rake and it will change the vehicles aerodynamics from factory spec. This isnt a huge difference but it's not something I would think of doing to help improve any performance aspect of the car at all.
Mike
The difference in diameter is not 4mm. It is 8mm.
This will lift the front end of the car by 4mm. This will introduce negative rake and it will change the vehicles aerodynamics from factory spec. This isnt a huge difference but it's not something I would think of doing to help improve any performance aspect of the car at all.
Mike
more explanation please. am so blur
Pit Crew
Joined: Nov 2012
Posts: 230
Likes: 6
From: FL
Negative rake is when the front of the car sits higher than the back of the car. Positive rake is when the back of the car sits higher than the front of the car. Sometimes a very small amount of positive rake is used as part of the aerodynamics of a car. Usually negative rake is avoided. If you added a lot of negative rake you could eventually get a car very unstable at high speeds. Maybe some remember the Mercedes protoypes that did flips just from driving forward on a track.
Lead Lap
Joined: Aug 2013
Posts: 491
Likes: 6
From: Middle east
Here you go!
First verdict after 15 miles on brand new Dunlop Sport Maxx RT 225/40/18. The noise is more high pitched than my winter tires, and the stock Bridgestone summer tires. And they really are quieter. I hear the wind noice more clearly now.
The real test will be tomorrow with my daily commute to work. 55 miles, of which 50 miles in 70 mph.
First verdict after 15 miles on brand new Dunlop Sport Maxx RT 225/40/18. The noise is more high pitched than my winter tires, and the stock Bridgestone summer tires. And they really are quieter. I hear the wind noice more clearly now.
The real test will be tomorrow with my daily commute to work. 55 miles, of which 50 miles in 70 mph.
And did the tires sound noisy after putting miles on them ?
I postponed changing the tires until after the summer , since the temperature may go up to 50 degree C in my country .
stock rears for PSS are on national backorder with no ETA. So if anyones looking for that you may want to look at other brand/models. Continental DW is a good tire after the PSS. I went with 10mm wider sizes on the PSS, looks a little bit thicker than I expected but I wanted to try out PSS without the backorder. The stock tires looked laughably puny, stretched, have a little less wheel gap now with the thicker tires. My speedo shouldnt be off too much, it was calculated about +1.2%. With the wider rear and grippier compound of PSS, acceleration feels a bit harder. I havent tested it out much because the roads were damp this morning. Plan to do some tracking later in the year, i try to avoid summers, too hot.
https://www.clublexus.com/forums/is-...zed-tires.html
https://www.clublexus.com/forums/is-...zed-tires.html
Last edited by 4TehNguyen; May 9, 2014 at 07:19 AM.
Lead Lap
Joined: Aug 2013
Posts: 758
Likes: 26
From: Sweden
They still seems quieter than the OEM Bridgestone. I'm happy with them.
I want to switch the stock bridgestone EL400s to something less noisy. Seemed that conti DWS was best all season choice. Anyone else have DWS's and have noise complaints?
Pole Position
Joined: Jul 2010
Posts: 2,942
Likes: 182
From: Los Angeles, CA
i want the quietest, smoothest/plushest ride that i can possibly get out of my car and am also looking to replace the bridgestone oems. i have absolutely no idea in which direction to look, though. tirerack.com, maybe? everyone seems to have a different opinion on what constitutes subjective terms like smooth, or plush, or refined. sigh.
oh, and the car is located in california, not spain, so all of the aforementioned suited to california weather, i.e. grand-touring tires (?)
oh, and the car is located in california, not spain, so all of the aforementioned suited to california weather, i.e. grand-touring tires (?)
Last edited by davyjordi; Jun 10, 2014 at 06:18 AM.
Advanced
Joined: Jun 2013
Posts: 527
Likes: 15
From: Singapore
i want the quietest, smoothest/plushest ride that i can possibly get out of my car and am also looking to replace the bridgestone oems. i have absolutely no idea in which direction to look, though. tirerack.com, maybe? everyone seems to have a different opinion on what constitutes subjective terms like smooth, or plush, or refined. sigh.
oh, and the car is located in california, not spain, so all of the aforementioned suited to california weather, i.e. grand-touring tires (?)
oh, and the car is located in california, not spain, so all of the aforementioned suited to california weather, i.e. grand-touring tires (?)
