Offset pros needed

Toms-SC

Registered User
Ricardo what do you mean by trembling?

And taking into accounts Dave's info...

19" Combo take 3....

Front 19 x 8.5 w/ 245/40 @ 32MM
Rear 19 x 9.5 w/ 275/35 @ 36MM
 

ricardoa1

Registered User
Ricardo what do you mean by trembling?




I didnt see you asked. The car will wander and follow ruts and road imperfections on the highway at higher speeds. It can be alliviated with different alignment specs. You might not experince it but its a side effect of wide front tires. But it will feel more controlled and handle better during hard corners.
 

Toms-SC

Registered User
More to think about. Great. It's interesting to see the three different takes as to what constitutes a good fit.

Working with Fast Ed on the subject here is his take..

19" Combo 4....

Front 19 x 8.5 w/ 255/40 @ 35MM
Rear 19 x 9.5 w/ 275/35 @ 36MM
or
Rear 19 x 10 w/ 285/35 @ 40MM
 

XR7 Dave

Registered User
More to think about. Great. It's interesting to see the three different takes as to what constitutes a good fit.

Working with Fast Ed on the subject here is his take..

19" Combo 4....

Front 19 x 8.5 w/ 255/40 @ 35MM
Rear 19 x 9.5 w/ 275/35 @ 36MM
or
Rear 19 x 10 w/ 285/35 @ 40MM

Look at the tire specs of the brand tires you intend to purchase. Tire widths vary - some times a LOT. Just because one says "255" doesn't mean that's how much tread the tire has. Point is, you need to look carefully at how the tires you choose are going to fit the rims you choose. If you want a particular look, and especially if you want the look to match, front to rear, then this is important.

For example, a 255 in most brands is going to have more tread width than an 8.5" wheel, and the 275 you have planned for the rear, is going to have less tread width than the 9.5" and definitely less than a 10" option. Couple that with the fact that a 255 is taller than a 275, and you may end up with a somewhat goofy combo.

The offsets that Ed listed are within 3mm (1/8") of what I listed so I wouldn't consider that a "different take," rather you wouldn't notice the difference either way. Ed's wheel specs are fine.
 

XR7 Dave

Registered User
Ricardo what do you mean by trembling?

It's not trembling, it's called trammeling and it refers as Ricardo said to where the wide tires will bite alternately on the inside and then the outside edge of the tire and pull the car around one way or the other depending on road conditions.

When a tire is wider than the rim, then that accentuates the problem.
 

ricardoa1

Registered User
It's not trembling, it's called trammeling and it refers as Ricardo said to where the wide tires will bite alternately on the inside and then the outside edge of the tire and pull the car around one way or the other depending on road conditions.

When a tire is wider than the rim, then that accentuates the problem.



Yeah that! Thats what I get for replying with my phone most of the time.
 

XxSlowpokexX

Registered User
Just for completeness, you mean his 255/40 has a taller sidewall than his 275/35 would have, by about 5mm, right?

RwP

I always check tire manufacturers measurements...They just arent all the same. Ive noticed a 245 a better match for the rear 275
 

bigpoppa822

Registered User
Thats getting risky even with the fender roll. But should look pretty agressive.

It's really close to where I am in the back and a little bit more offset in the front (18mm less poke than me). 19x10 et40 is what I probably should have said for the rear.
 

EatonEmployee

Registered User
I have 5 18" TSW Jarama's with a 40ET on new Michelin Pilot Sport A/S's. They are under 1000 miles & I have a 5th. PM me if interested. These tires are 245/40/18 or 45, gotta look. They are right for the SC. The tires are 290 a piece but I would sell the set pretty reasonably.
 

LeoT

Registered User
If you step down to a 9.5" wheel then offset will drop to 36mm allowing you to split the difference and keep the tire in the same spot.

Which tire you use depends on how you want them to fit the rims. If you want a pulled look like Micah, then you'll want the 275 on a 10, and might even want the 245 on a 9. But, if you want the tire to be square against the rim like Ed's, then you will need to do the 8.5/9.5 wheel size.
Dave I just purchased a 1992 SC and want to do 19” wheels 8.5” front and 9.5” back on it looking for an euro look can you please confirm the offsets? And suggested tire size etc ?
 

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XR7 Dave

Registered User
Dave I just purchased a 1992 SC and want to do 19” wheels 8.5” front and 9.5” back on it looking for an euro look can you please confirm the offsets? And suggested tire size etc ?
Sorry I did the math and fitments a long time ago. I don't remember anymore enough to be able to help you.
 
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