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tires


mudcat24's Avatar
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11-25-02, 04:35 PM   #1  
tires

i have a 1992 astro van. im wondering if i can put 235/75 /15 tires on this vechicle. it calls for 215/75/15. thank you in advance!!!!!!!

 
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11-25-02, 07:05 PM   #2  
Joe_F
Why?

1) You will throw the speedometer off.
2) You will likely cause rubbing and scraping in the wheel house area on full turns.
3) The tires cost more money.
4) You will use more fuel with wider tires.

Zero benefit to adding them on this vehicle.

 
mudcat24's Avatar
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11-25-02, 07:13 PM   #3  
tires

they were givin to me,will they really scrape the wheel wells, are they that much bigger than whats on it now?.but how do trucks put bigger tires on their vehicles if this is the case?

 
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11-26-02, 03:32 AM   #4  
Joe_F
They have lift kits and suspension mods to accomodate the tire size. Some STILL scrape.

Yes, you run the risk of scraping, among the other problems I mentioned.

Swap 'em for the right set.

 
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11-27-02, 05:27 PM   #5  
roland1978
the best way is have your local tire shop mount one and try it. if don't mined the lose in gas mileage. You don't have to worry about over loading the tires.

 
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11-27-02, 05:51 PM   #6  
roland what do you mean by overloading the tires?. how much gas mileage are we talking about. i think that im going to try the front set and see if everything is ok. like i said they were free and they are brand new ( firestone supremes).

 
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11-27-02, 06:58 PM   #7  
speed

just to let u know
your speedo will read 60 and u will actually be doing 62.6 mph
the tire is 1.2 inches taller. thus your vehicle will be raised by just over half an inch
just as a laugh you will get 4% longer life on the tires as opposed to old size

i just did the same thing on crv
but it is tall in the first place with lots of room in the well

try fronts out on turns
if no rub i wouldn't worry about anything
gas mileage should be almost same
no worries for anti lock or anything

do it

 
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11-27-02, 07:01 PM   #8  
thank you im going to try it and ill let you know

 
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11-28-02, 08:52 AM   #9  
roland1978
what i mean by overload is that the 235 has a higher load rating then your 215. as you read, you have to try them to find out. have the tire shop turn your steering in both direction while spinning the tire, also have them look to see that you have plenty of clearance for supension travel.

 
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11-28-02, 10:12 AM   #10  
Gas mileage etc.

WHen checking for wheel rub make sure to try BOTH extremes of the sterring wheel, this is where rub is most likely to occur.
Your ga milage will remain about the same, the taller tires give you a lower gear ratio, but the increased height increases aerodynamic drag.
You will loose a slight amount of "get up and go" from the lower effective gear ratio.
Also you speedo will be off slightly as indicated above.
Ask anybody into 4x4's and they will tell you the same.
I personally am running 275/70/16's on my truck, 2 sizes bigger than stock with no problems
Besides if the tires are FREE it's worth a shot

 
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