v1no

Hi everyone, its my first time posting. I'm in a dilemma in upsizing the original 245 45 19 tyres to 255 45 19. Cant seem to find any pictures of it online. Anyone care to share? - Didn't want to put 255 on and end up looking too big on my LS460.

Have a good day ahead!

Dave144239

I doubt you'll even notice the difference. You're talking 5mm each side of center, so basically your new tire would be 1/5" closer to the fender as you look at it from the side of the car.

You would be changing your wheel diameter slightly. 65mph on the old tire would be 65.83mph on the new tire.

v1no

sounds good..245 seems really narrow for a big car like the LS.

JLAWS

Because of the Lexus rim with and offset the 255s will have a fat tire look. I've done 255/45/18 on my LS430. the steering felt heavier compared to 245/45/18 and I didn't feel any improvement over bumps, It did feel a little more planted around corners. Appearance wise and overall I liked the 245s.

I have 19's wheels on my Ls460. It would be interested in seeing what 255s look like. Try it out!

mckellyb

I wanted 255/45/19s in the Continental DWS06 rubber, but no, not made in that size. Went with the 255/40s, instead. 2.5% smaller circumference, but the reason I wanted the 10mm wider tires was for wheel rim protection.

The 10mm wider tires are just enough wider so tires rub on the outside before wheels. I think there were 265/40/19s available, but they, Discount Tire, wouldn't put almost 1" wider tires on 8.0" wide wheels. I can dig it, because wider tires may have caused not only rubbing, but the wear could also get funky, over time. I've had both happen, albeit 30 years ago, so yeah, they're right.

I'm tempted to put my Yellow Box speedometer/odometer corrector on transmission speed sending unit's wiring, but it's only 2.5% high/fast. Unfortunately (fortunately?), it was absolutely spot-<expletive>-on with OEM-size tires. I built correction into the spreadsheet I keep on the car for gasoline/miles/MPG/repairs/etc.

Still kinda bugs me, even though it's a smaller error than many vehicles, OEM.

JLAWS, I'll take a few pics. Give me a bit, need to run errands to finalize supply acquisition for transmission oil change (all of it, not drain/refill).

v1no

no luck finding a pic of 255 45 19 on oem 19s online

mattbeeezy

iTrader: (26)

Just something to think about, why not just try and a tire brand that runs larger than the rest? My Michelins A/S's ran definitely bigger than the stock Bridgestone's my 19" touring rims came with.

v1no

thats what i thought too. Currently running Nexen tyres and looking for Michelin Primacy 3 ST which im pretty sure for the same size would running bigger&wider than the Nexens.

mckellyb

255/40/19s on OEM 5-spoke wheels. I figure you're looking to see how far the sidewalls bulge from the rim of the wheel. The difference in height is only 2.5%, and unless they're off the car, and compared side-by-side, you can't see it.

These are sub-5K mile Continental DWS06 tires.

v1no

cheers for the pictures! i believe 255 40 19 is smaller(in diameter) to 245 45 19? Have you got a side on picture?

mckellyb

They are, but you can't see the difference.

Literally, you can't see it. Here's the virtual version:

mckellyb

Here ya go. The suspension is at regular ride height, not "HEIGHT HIGH", but I've also dropped it about 3/4" all around.

v1no

looks alright!!

mckellyb

I'm tempted to drop it another 1/2", but I don't want to drag the nose any more than I do, now. Plus, it auto-lowers above 65 MPH, and I really don't want to risk bottoming out while at-speed.

Thanks for the compliment!

My garage is a freakin' wreck...just ignore the background.

v1no

to be honest i feel thats a driveable nice height. sorry im not into fully slammed vip look kinda thing