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Rotor size question.

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

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TheOtherside
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TheOtherside

Rotor size question.

Post by TheOtherside » Tue May 21, 2019 6:34 pm

I'm having a buddy that works for US Venture price out some rotors and pads and he's getting multiple diameters for both front and rear.

Does someone know what the sizes are for front and rear rotors on a 1998 V70R?

THANKS!


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abscate

Re: Rotor size question.

Post by abscate » Wed May 22, 2019 2:05 am

The two P80 sizes are280mm and 305 302mm

Plug the VIN Into the Volvo web store And it should pop out the right part for you.

I believe the R models all got the 305 302mm rotor in 1998


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Re: Rotor size question.

Post by TheOtherside » Wed May 22, 2019 7:03 am

abscate wrote:
Wed May 22, 2019 2:05 am
The two sizes are280mm and 305mm

Plug the VIN Into the Volvo web store And it should pop out the right part for you.

I believe the R models all got the 305mm rotor in 1998
Why thank you my good sir!


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Re: Rotor size question.

Post by bmdubya1198 » Wed May 22, 2019 7:46 am

1998 R should have 280mm up front. I don't think the R got 302mm front rotors until 1999 or 2000.
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abscate

Re: Rotor size question.

Post by abscate » Wed May 22, 2019 7:47 am

I believe the R models all got the 305302mm rotor in 1998
Needs verification. Never trust any memory over 30


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Re: Rotor size question.

Post by Clemens » Wed May 22, 2019 8:14 am

If you have the 302s be sure to get the matching pads. There seesm to be a difference.


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abscate

Re: Rotor size question.

Post by abscate » Wed May 22, 2019 9:21 am

abscate wrote:
Wed May 22, 2019 2:05 am
The two P80 sizes are280mm and 305 302mm

Plug the VIN Into the Volvo web store And it should pop out the right part for you.

I believe the R models all got the 305 302mm rotor in 1998
Whats 3mm between friends? Not much

More between brakes though.

:lol:


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Re: Rotor size question.

Post by 850 LPT » Wed May 22, 2019 10:52 am

Clemens wrote:
Wed May 22, 2019 8:14 am
If you have the 302s be sure to get the matching pads. There seesm to be a difference.
Pads are the same. Caliper is the same as well.
The only difference is the caliper mounting bracket.


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Re: Rotor size question.

Post by TheOtherside » Wed May 22, 2019 10:54 am

Thanks for everything guys. So the only real way to tell is to take them off and measure?


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Re: Rotor size question.

Post by abscate » Wed May 22, 2019 11:02 am

Almost an inch difference in diameter? Get a scale , man, and measure it.

Homemamde caliper (measuring kind) with a paint stick and two thin bamboo skewers


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