jadu

iTrader: (42)

Upinthelex, the tires you have right now look pretty wide. I suggest a 20mm or 25mm spacer to make it look more flush; but its best you measure this out for yourself, dont want tire rub.

optimistic

Hello,

Proud new member. I just bought a '99 SC400 (Black/Tan) one owner with 88K miles. I was thrilled to find it. It replaces my '99 SC400 that was just totalled when a woman pulled out right in front of me and I had nowhere to go.

Anyway, on the last SC I had 18 inch rims with the low profile 40s... loved the look but the ride was pretty harsh and I bent a couple of rims on some bad potholes... I replaced those with 17s and the ride was a bit better, but I wasn't as happy.

Looking to do the 18s again, but my question is, how much room do I have to maybe use 45s or even 50s to make the ride a bit less harsh? I know my speedometer/odometer will be off, but my main concern is clearance in the wheel well and/or struts...

Bottom line, how high of an aspect ratio (45/50/55) can I go with 18 inch rims on a stock SC400? Many thanks.

jadu

iTrader: (42)

^^^ first off, welcome and to answer your question the bigger the tire profile, the more your speedometer will be off. IMO, depending on the wheel width, I'd stick with 225/45R18, 235/45R18, 245/45R18, 255/40R18 and so on. If you haven't already, use a tire calculator to help size your tires accordingly. The one I usually use is: http://www.rimsntires.com/specs.jsp

Duck05

I have been bouncing back and forth between 18s and 19s and now want to go with an 18x8 +40 wheel. Plan to use tire size of 245x40x18. Considered a 45 for a better ride but the 40 is closer to the 215/60/15 OEM size.

Stock suspension now and would likely lower it a bit to close the gap. Still want to avoid any roll or pulls. Thanks for any opinions and advice.

jadu

iTrader: (42)

Duck, IMO, the 40 series profile tire would not only look better, it may also give you a performance edge i.e. less side wall flex in spirited driving. The 45 series would provide a little more cushion (absorbing bumps in the road) and comfort especially riding with a couple passengers. Your speed reading would also be 6% off.

Duck05

Thanks!!! I had calculated the impact of using 45 on the speedometer too so nice to have that confirmed.

If I do lower the car a bit will the wiring harness in the driver side wheel well come into play? I found and read through the DIY thread and it appears it is worth doing that to eliminate issues.

Wheel choice right now is the Ace Alloy "Trend" in chrome. Not the most expensive but reviews are decent. I saw a picture of some discontinued Falken wheels (koblenz?) that look good, too. Just so many options (and just so little money....).

brucelee1

iTrader: (2)

Quick question on wheels. I intend to go with a Lexus IS300 rim, 17 by 7 with 45 offset.

Will I need spacers or am I all set as is?

Thanks

durps

iTrader: (8)

Yes 15mm for a conservative flush. 20mm for a good flush.

optimistic

Thanks Jadu. I'm still wrestling with the options I don't care if the speed is off, I can adjust my speed myself.

jadu

iTrader: (42)

You should be ok as the bump stops prevent you from rubbing your upper wheel well (using a spring/shock combo). I can't say the same for coilovers.

Mines is off as well, but doesnt bother me either


You can use them as is. They'll just look really sunk (I've had some before). The spacers would make it look better

golf007

iTrader: (1)

@ JADU: i'm was just wondering that if 225/45/18 is going to be too small for the 18x8.5 +19 ? also can run those(225) size in the front and 245/45 in rear ?

raine

iTrader: (7)

Jadu picking up the slack, gj brother

LTSC

hey guys sry i might be posting this in the wrong spot but im planning on getting some ssr/lm-9 wheels for my lexus sc400 the size i was planning to get was 19x9.5 +22 for the fronts and 19x10 +22 for the rear everybody here in UT that i know say they are going to be to big and they will stick out so i guess im just trying to find out what would be a good size for my lexus any help would be great thank you for your guys time (and planning on rolling fender if needed)

kinch09

iTrader: (10)

i plan on going 20x9 and 20x11 +22 all around with a 235/30 and 265/30. i was told it would be a good look for our SCs, of course ill have to roll the fenders with some camber

jadu

iTrader: (42)

225/45, 235/45, or 245/45 are all sufficient. I'd honestly run the same tire size all around, but that's just me.

Im tryin! where you been man? I have very limited experience with tire brands