Hi, I've got a lexus ls 460 tires wearing out will like to get a 245 rather than the 235 50r18 on my next tire purchase, the 235 are pretty slim of a big car like this. Is it safe to assume it will fit with no issues.
The car had options where you could get the premium 245 45r19 inch rim and tires with no extra adjustments to it to the car, so I am assuming bumping up to 245 should work just fine right?
Running this through this platform for get insights from more knowledgeable people.
Thank you in advance for your responses.
Why do you want bigger wheels? The low profile tires are going to give you a harsher ride. You'll feel every bump, and they're easier to blow out.
Narrow tires also give better fuel economy.
Plus you're going to have to spend a lot of money to get a new set of 19 inch wheels. I would just stick with what you have.
This site might be helpful: https://tiresize.com/converter/
@grey check this YT site out regarding performance tires: https://www.youtube.com/watch?v=Bgz0qF3CuNA
Again just wider tires, not changing rim size or side profile.
That's not how tire sizes work.
The '50' means the sidewall is 50% of the width. You can't change one without changing the other. The tire height will change.
If you don't understand , then use the calculator Hixter suggested.
Now in this case, the change isn't huge ... less than an inch, but it will throw everything off. Speedometer. Shifting, etc.
I bet Toyota programs the computers differently for the different tire sizes.
So again, WHY do you want this? Is it worth it?
when turning it just feels like the boat... it just feels like the boat ( ls 460) will looses traction
It is a boat. The Lexus LS is a "luxury sedan". Not "sport coupe".
If your car loses traction in turns then you just need new tires, or new shocks or alignment. Or driving more appropriately for a 4,700lb car.
Coming from the Gs the stability, especially around turns was really good.
GS is a "performance sedan". It weighs 970 lbs less!
Wider tires are actually MORE difficult to turn at low speeds. It will require more input at the steering wheel.
Just thought a wide tire will help a little.
On summer roads maybe, but not a noticeable difference. But then, you shouldn't be breaking traction on dry roads anyway.
Wider tires will also hydroplane easier.
"In the winter, narrow tires are better under extreme conditions as they provide higher surface pressure against the road. Narrow tires also work better than wider ones in loose snow and slush. Wider tires, for their part, will offer more grip on hard surfaces." ( https://www.nokiantyres.com/company/news-article/wide-or-narrow-tires-here-s-how-your-choice-will-affect-driving/ )
@imperator thank you very much for your insights.
Appreciate the free consultation this platform provides.
You're welcome. Can't complain much when it's free , right? 😆
@imperator I don't want to chnage the rims, just the tires. Instead of 235 get 245 still sticking to the 50r18. I don't like low profile tires, I got rid of my 2016 Gs because of that.
I just want wider tires
I just mentioned that the car had the option of premium wheels I.e 245 45r19.
So I am assuming a 245 50r18 should fit just fit. Again just wider tires, not changing rim size or side profile.
I just wanted better traction, driving, I feel like the tires are too narrow and when turning it just feels like the boat ( ls 460) will looses traction. Coming from the Gs the stability, especially around turns was really good.
Just thought a wide tire will help a little.
Can't believe lexus put a 235 tire on this car, my GS had same tire width, but a 45 aspect ration and same 18 inch rims.
@hixter does the green means it the best alternative? Sorry haven't used that site before
I think the shading color is to give you an idea how severe the size difference is
@hixter does the green means it the best alternative? Sorry haven't used that site before
@grey sorry I missed your question earlier (name was sic) It's not you, the site can be a difficult to navigate (had to clear my browser cache) here's the 2 sizes and diffs:

I posted this link above regarding UHP tire widths.
@ hixster Thank you, @imperator has scared the idea out of my mind.
The car has warranty I don't want to go try to fix something and they say, you got wrong tires, hence that's why the car has this issues and we won't cover it.
They alway look for any reason not to pay out
No problem @grey