Q45 Newbie Need Tire size help

Got questions about your Infiniti? We're here to help, and it's FREE!
VIPQ
Posts: 27
Joined: Mon Nov 24, 2003 9:10 pm
Car: Lexus & Infinity
Contact:

Post

Just joining in after purchasing a '97 Silver Q45 last week. Got bored of toying around with my '95 Lexus ES300 (another difficult car to find aftermarket mod parts), so I will start with the Q and need some expert advice. I just picked up a set brand new Lexus SC430 Rims (18X8" 45mm offset, Chrome w/optional Star center caps) to put on the Q and need some advise on the tire size for these rims. I am torn between 245/40/18s which is the OEM size for these rims on the SC430, and the 245/45/18. I was leaning towards the latter in order to fill in the fender gap a little more but a few of the members here (ie., Pasadena Q) states that 245/45/18 are an extremely tight fit on the Q's front - Is this true and would I have problems at this size? I would like to purchase the tires sometime this week and would like some quick expertise on this matter.

I am mostly into mods for good looks and do not wish to get into investing more than the cost of the car for engine mods and such - we all realize that the Q does not stan for Quick. So here are some of the changes I will be making within a couple of months time:

-OEM Nissan Y33Cima Clear Headlights (I just bought a good used pair from Japan and awaiting shipment)-PIAA 8000k Spark Xenon H4 bulbs (not offically released in the U.S. yet)-PIAA 7500k Spark Xenon H3 bulbs (800k not avaialble yet anywhere)-JDM headlight eyelid for Y33Cima by INSURANCE_Rear Spoiler for Y33Cima by Insurance-JDM winker side mirror covers for Y33Cima (this one really looks good)_ JDM 3 piece aero kit for Y33Cima (haven't decided which one but most likely will go with WALD or INSURANCE - will take two months for ocean shipping)-Stillen exhaust for Q45 (price is very reasonable compared to the one's being sold in Japan)_Springs and shocks will be considered after installing my new rims.

-Double din DVD/LCD unit (one from Rosen seems to be the only viable option)

That is all I wish to do for now so will post some picks in a couple of months. looking forward to lots of input.


Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

Post

Lexus wheels are oem hub centric at 60 mm how did you get them to fit on Nissan 66 mm hub rings............

maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

Post

Most who have tried PIAA prefer the Sylvania Silverstars, which cause no problems.

Higher color temperatures do not correspond to greater illumination.

User avatar
AZhitman
Administrator
Posts: 54538
Joined: Mon Apr 29, 2002 2:04 am
Car: 58 L210, 63 Bluebird RHD, 64 NL320, 65 SPL310, 66 411 RHD, 67 WRL411, 68 510 SR20, 75 280Z RB25, 77 620 SR20, 79 B310, 90 Z32, 91 GTi-R, 92 Silvia Qs, 98 S14, 23 Z.
Location: Surprise, Arizona
Contact:

Post

I second maxnix's above comment - VERY true.

VIPQ
Posts: 27
Joined: Mon Nov 24, 2003 9:10 pm
Car: Lexus & Infinity
Contact:

Post

Q45tech,If you want to see my Q riding on Lexus SC430 RIms vist:

http://members.cardomain.com/vipcima

Let me know what you think.

User avatar
Q451990
Moderator
Posts: 11030
Joined: Tue Jul 23, 2002 8:21 am
Car: 1990 Q45 - 118K, 2022 Toyota 4 Runner, 2004 Frontier M/T - 108K, 2012 Xterra (Mom's), 2023 Rogue (Inlaws)
Location: Columbia, SC
Contact:

Post

What plans do you have for your take-off 97 rims? :D

Heath

maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

Post

Q451990 wrote:What plans do you have for your take-off 97 rims? :D

Heath
Heath, I thought you already had the Y33 16" wheels? Didn't use 17" on t model until 1999, I think. :icesangel __________________Brian1995 Q45 & Q45t & 2000 Q45

Discover the power of the button!

User avatar
Q451990
Moderator
Posts: 11030
Joined: Tue Jul 23, 2002 8:21 am
Car: 1990 Q45 - 118K, 2022 Toyota 4 Runner, 2004 Frontier M/T - 108K, 2012 Xterra (Mom's), 2023 Rogue (Inlaws)
Location: Columbia, SC
Contact:

Post

I do... but spares are always nice - or just a question for the general demand on the board. I can't help but vulture :D

Heath

User avatar
Rex
Posts: 16845
Joined: Sat Apr 05, 2003 6:50 pm
Car: None
Location: South of ATL
Contact:

Post

Pyle offers an In-Dash Double DIN DVD, I have no experience with Pyle.

Kenwood also offers one or will this spring. Have had Kenwood products with good success.

Check out the pic I posted in your JDM thread in Infiniti General.

VimyJ
Posts: 1969
Joined: Wed Jul 24, 2002 6:09 pm

Post

VIPQ wrote:we all realize that the Q does not stan for Quick.


Can't believe you Q guys let that slide!:D

fxjackso
Posts: 354
Joined: Thu Jul 25, 2002 3:17 am

Post

VIP-

Can you give us more details on how you modified the centers?Was it a kit of some sort, or a DIY? Seems to open up a new selection of wheels. I'm not a fan of chrome, but I'm sure that Toyota fits top quality to the Lexus line, and you should get a strong wheel at a reasonable weight, that stays in balance.

User avatar
Q451990
Moderator
Posts: 11030
Joined: Tue Jul 23, 2002 8:21 am
Car: 1990 Q45 - 118K, 2022 Toyota 4 Runner, 2004 Frontier M/T - 108K, 2012 Xterra (Mom's), 2023 Rogue (Inlaws)
Location: Columbia, SC
Contact:

Post

VimyJ wrote:Originally posted by VIPQ "we all realize that the Q does not stan for Quick." Can't believe you Q guys let that slide!:D


He's talking about a 1997, so I understand :D

Heath

VIPQ
Posts: 27
Joined: Mon Nov 24, 2003 9:10 pm
Car: Lexus & Infinity
Contact:

Post

fxjackso,

First off, I know I could have gotten any decent aftermarket wheels that will fit my Q45, but I kinda wanted to put on something that will not be easily copied by many others, so that was one of my main reasons for modding out the Lexus rims (besides the fact that I really loved the look of these rims).

I've purchased the Lexus rims first knowing that the center bore hole on these rims will be too small(60mm vs 66mm) for my Car and with these rims having a two inch increase in width with a 45mm offset instead of 40mm on the Q, I also realized that there may be a possible rubbing issue between the tires and the suspension. But since I also have a '95 Lexus ES300 sitting in my garage, I figured that if the needed modifications seem too difficult or time consuming, I would just install the rims on my Lexus.

After searching around numerous places where I can re-bore the center hole to fit the Q (a lot of wheel repair shops, cnc mill shops, laser fabrication shops, etc.), I got in touch with a CNC machine shop in Canoga Park, CA, owned by a retired race car driver who seemed to possess the expertise to provide me with the needed precision service.Knowing that the wheels' center must fit perfectly in my car in order to be hub-centric, the cutting had to be very precise and I just couldn't take the wheels to any shop.

After the reboring of the wheels, I tried the rims on the front side of my car without the tires and saw that there is very minimal space between the inner edge of the rim and the suspension (about 3-5mm). Calculating the tires (245/40ZR/18) in to the picture, there will definitely be rubbing problems with the suspension. Fortunately, I had already ordered a set of JDM spacers made specifically for Nissan specs from Japan and these spacers allow me to increase the wheel to suspension distance in increments of 3mm/7mm/15mm/30mm. These are really top quality manufacturer specific spacers, not the worthless and unsafe universal types you see in your local auto parts stores or Ebay. Strangely though, the rear wheels did not pose any rubbing issues even without the spacers, but since I needed to widen the front side slightly with spacers, I didn't want the rear wheels standing narrower than the front, so I've placed 3mm spacers up front (making the rims 42mm offset) and 7mm spacers on the rear (makinf them 38mm offset), making the rear slightly wider than the front, without any noticeable balancing problems. Lastly, because the lug size on Leuxs oem wheels are slightly bigger (making the Lexus rim lug holes slightly bigger) than that of Infiniti's, I had to find some special lug nuts that fill fit Infiniti lugs, while filling in the gaps of the Lexus's rim hole. After the appropriate wheel/speed balancing, the wheels run hubcentric and are safely secured to the car.

VIPQ
Posts: 27
Joined: Mon Nov 24, 2003 9:10 pm
Car: Lexus & Infinity
Contact:

Post

Re: Pyle Double din unit:I think I'm going to wait a little and see what may come out this year or early next year in the form of double din units. In my Lexus ES300, I have two seperate clarion single din units with a separate on-dash monitor and a TV unit in the trunk but it took too much time and money to install these as separrates - this time I will wait for a quality all-in-one double din unit. I know that Pyle has been around for a long time but they primarily knowm for their subwoofers back in the days and seems like they entered the headunit market mainly to cash in on the trends. Isee most of their headunit offerings are mid to low budget levels...


Return to “Infiniti Online Mechanic”