to increase tire size or stay stock? that is the question

ive been reading a bunch of threads and some are unhappy with the increased size
for example
245/35/19 on front and 275/30/19 on back
some say the ride is even more harsh when bigger but some say that bigger is better
some say it simply comes down to tire choice
what are your opinions? ups and downs?

i am leaning towards 245 and 275 but im still undecided
maybe someone can talk me in to or out of it

im not really big on the milage being off by increasing size
but how off would it be?
and is there a calculator on the net to figure this out?

thanks guys, your input is always appreciated

 

i think the harsh ride is due to the brand and the upsize. my stock bridgestone is more of a harsh ride then the stock michelins. i think that if you upsize get either the continentals dw or the michelins pilot super sport. at this point i think anything is better then the bridgestone, but I must say they last pretty long. I'm up to 25k miles and it seems my tires can go up to 30k. I'm planning on switching over to Continentals DW when my tires are done.

 

It all depends on what you plan to do with your car. Are you buying the new wheels/tires for looks or are you going for performance? The wider wheel/tire combo you go, the more road noise you will experience regardless of what tire you put on. Larger tire contact patch to the ground means more resistance and sound.

This is the oldest and longest running and most reliable tire calculator on the internet to date. I'm surprised you don't know about this.

http://www.miata.net/garage/tirecalc.html

 

i didnt know about the link, but now i do, thanks flip, i knew i could count on ya lol

and im going to be using the tires for everyday use with the occasional drag and rare track date/ numbers are too big of an issue, just for fun
thats why the ps2's suited me well

im thinking the nitto invos would be a good choice/try, ive read good things about them
maybe i should just get them in stock sizes???
its a tough choice

i was also going to have an alignment done when upsizing
i was going to use lobux's specs from his thread for more even ware
but like i mentioned in another thread, would the specs still be the same with a different tire size? i imagine they would be but i could be wrong

 

I'm running 245/35/19 and 275/30/19 on stock wheels. The tires are Vredestein Ultrac Sessanta. They are quieter and ride smoother than the Michelin PS2s that my car came with in stock sizes (225/255).

I will not go back to stock size or tires as I am completely satisfied with my Vredesteins. Performance is similar to the Michelin with more traction.

 

My factory Michelin PS2's have served me well. I'm at 34k miles and the rears are at about the 2/32" wear bars, the fronts still have 4/32". My next set will be the Pilot Super Sports. You get what you pay for with tires. You can ultimately go with a cheaper brand, but why would you do that to your ISF?

 

Me, I'm running 245/35/19 and 285/30/19 Continental DW. IMHO, a great tire. Improved handling, greater traction, and a better ride than the stock PS2s. I luv 'em. IMHO, the 275s are a wee bit short.

My thread here:

https://www.clublexus.com/forums/is-...xtreme-dw.html

Lou

 

thanks guys for the input
i think the invos would be a good alternative
sure maybe they are cheaper but i have read reviews where some say the price dosnt justify the performance difference between the two

flipside I do agree with you 100%
you do get what you pay for
and cost really isnt the issue in this case
i do however like the tread pattern on the invos and think they would look and feel good
i honestly wish i could test them on the vehicle before i buy

to go stock size or with more meat is still the question???? lol
id imagine that the car would be better with more meat on the ground
if it really is better that way
lexus engineers who know a lot more then myself and would probably of done it
but i could be wrong

i was leaning towards the invos but i do agree with ur opinion on the fact that you get what you pay for

i have read that the ps2 is rougher at the 245 275 size
so maybe I should stick with the stock size
and i have also seen information that there are special ps2's for our car and regular ones at stock size
im not sure if this is true, I honestly cant think of what the difference would be
does anyone know?

 

If you upsize, use the stock BBS rims. I find that upsizing has made the ride more harsh even running upsized PS2s.

 

Can some of you guys with 245 and 275's post up pics of your cars? Im considering doing the same thing but unsure of how the size of the sidewalls will change.

Thanks.

 

Here:
https://www.clublexus.com/forums/5516117-post10.html

 

I got my 285/30/19 Nitto INVO's installed yesterday and so far so good. I can tell it grips the road a lot better. Having the mods I have done so far It would break loose in 1st, 2nd and occasional 3rd with pilot sport a/s, but I have not actually launched the car or driven hard since the Invo install.

 

Let me know how you like them
what did you have on before the invos?

 

the michelin pilot sport as plus oem size.

 

Hi do you rub w the invos, i dont have stock wheels i have 9 inch wide did you rolled up your rear im lokking for the same set up i just installed on the front bigger than oem and the difference is very noticeable