While working on my Silvia I found out that with original
wheels I can use a 1 inch thick spacer on each side
in the rear and it still clear the wheelarches. I have
155-R14 on the 4.5 x14. The rear wheelhousings are
the same as the Roadster's except for upper forward
corner radius. Standard offset in the rear and 35 mm
offset in the front should work okay with wider wheels
& tires. I bought my spacers from H&R. They are for
200SX type S13 (240SX for USA)
Thomas
Graeme Suckling wrote:
> I did some mucking around on my '65 re wheels, before I stripped it
> down.
> The rear can tolerate a much wider and less positive offset, ie.
> approaching zero, than the front.
> Depending on the rim diam. the front can take a rim width of 6" and an
> offset of 35-37mm.
> This translates to a backspace number of ~110mm (4.33" or 43/8")
> The problem, as I saw it, was that a 14" rim inner circumference
> rubbed on the upper "A" arm at full lock with any offset greater than
> 37mm.
> Moving up to a 15" rim the above problem was not evident, but at full
> lock there would still be a likelyhood of the tyre rubbing on the
> front sway bar.
> The bottom line is that the car, to put max. rubber on the road
> without bending fender lips etc. requires two different rim offsets
> front to rear.
> I'm not suggesting that is the way to go, just the conclusion I came
> to.
> In Australia we have a rim Made by Performanc Wheel Co. called the
> Superlite which is very similar to the Panasports you guys see in the
> States.
> Perfomance appreciate the nostalgic value of this design, and will
> produce the wheel in any offset & stud pattern the customer requires.
> My final choice will probably be 15 x 6" Superlites with +35mm offset
> and 195/50 Yokohama A539 tyres giving an overall diam. of 578mm.
> Maybe.
> Graeme Suckling
> 1965 SP310 - under restoration.
> 1971 P510 4 door daily driver.
> 1972 PL510 2 door - in storage.
> 1973 240Z - re-building.
>
> -----Original Message-----
> From: owner-datsun-roadsters@autox.team.net
> [mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of Laury,
> Victor
> Sent: Thursday, 3 October 2002 2:30 AM
> To: 'SLBESQ@aol.com'
> Cc: 'datsun-roadsters@autox.team.net'
> Subject: RE: Tire Question
>
> >ok, I'm confused. do you want positive offset on wheels on a the
> rear of a
>
> roadster? I thought positive offset meant that the tire would be
> closer to
> the center of the car, by, in this case, 20 to 25 mm. with the
> already
> narrow rear track, don't you want to have negative offset wheels? if
> you
> use
> positive offset wheels, is there chance of rubbing the leaf springs?
>
> There's more leeway toward the spring than the fender. The ZX wheels
> your
> running are +15. if they were 0's you'd have to flare or raise the
> rear or
> both. But your right in the fact that our track is too narrow. The
> main
> problem is getting enough tire under the car, track width be dammed.
> BRE
> developed the "Squirelies" springs (springs with cut-out's for tire
> clearance) to get wider wheels without flaring (not legal at the
> time). a
> 7'' wheel +25mm is going to be cutting it fine no matter what. your
> pretty
> much squeezing the limits of the stock capabilities. It's kind of
> tough to
> be sure without actually having the wheel/tire on-hand to try, before
> you
> buy.
>
> Steve, is the black 67.5 body in the shop yet? nudge, nudge.
>
> your tax dollars at work,
>
> Victor Laury
> Environmental Specialist II
> Los Angeles County Metropolitan Transportation Authority
> Quality Assurance Department
> Environmental Compliance Management
> (213) 922-5795
> (213) 922-5142 Fax
> 900 Lyon Street
> 30-2-1
> Los Angeles, CA 90012-2952
>
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